diff --git a/src/app/tape/dialogs/dialogabouttape.cpp b/src/app/tape/dialogs/dialogabouttape.cpp
index ba7cb4f6d..a8458896e 100644
--- a/src/app/tape/dialogs/dialogabouttape.cpp
+++ b/src/app/tape/dialogs/dialogabouttape.cpp
@@ -41,7 +41,7 @@ DialogAboutTape::DialogAboutTape(QWidget *parent)
 {
     ui->setupUi(this);
 
-    //qApp->Settings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
+    //mApp->Settings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
 
     ui->label_Tape_Version->setText(QString("Tape %1").arg(APP_VERSION_STR));
     ui->labelBuildRevision->setText(tr("Build revision: %1").arg(BUILD_REVISION));
diff --git a/src/app/tape/mapplication.cpp b/src/app/tape/mapplication.cpp
index 039450eaa..e19c0112d 100644
--- a/src/app/tape/mapplication.cpp
+++ b/src/app/tape/mapplication.cpp
@@ -38,11 +38,10 @@
 
 //---------------------------------------------------------------------------------------------------------------------
 MApplication::MApplication(int &argc, char **argv)
-    :QApplication(argc, argv),
+    :VAbstractApplication(argc, argv),
       mainWindows(),
       localServer(nullptr),
-      trVars(nullptr),
-      settings(nullptr)
+      trVars(nullptr)
 {
     setApplicationDisplayName(VER_PRODUCTNAME_STR);
     setApplicationName(VER_INTERNALNAME_STR);
@@ -138,7 +137,7 @@ void MApplication::InitOptions()
     qDebug()<<"Command-line arguments:"<<this->arguments();
     qDebug()<<"Process ID:"<<this->applicationPid();
 
-    const QString checkedLocale = Settings()->GetLocale();
+    const QString checkedLocale = TapeSettings()->GetLocale();
     qDebug()<<"Checked locale:"<<checkedLocale;
 
     QTranslator *qtTranslator = new QTranslator(this);
@@ -183,7 +182,7 @@ const VTranslateVars *MApplication::TrVars()
 //---------------------------------------------------------------------------------------------------------------------
 void MApplication::InitTrVars()
 {
-    trVars = new VTranslateVars(Settings()->GetOsSeparator());
+    trVars = new VTranslateVars(TapeSettings()->GetOsSeparator());
 }
 
 //---------------------------------------------------------------------------------------------------------------------
@@ -194,10 +193,10 @@ void MApplication::OpenSettings()
 }
 
 //---------------------------------------------------------------------------------------------------------------------
-VTapeSettings *MApplication::Settings()
+VTapeSettings *MApplication::TapeSettings()
 {
     SCASSERT(settings != nullptr);
-    return settings;
+    return qobject_cast<VTapeSettings *>(settings);
 }
 
 //---------------------------------------------------------------------------------------------------------------------
diff --git a/src/app/tape/mapplication.h b/src/app/tape/mapplication.h
index d09ad8c6d..48e80c912 100644
--- a/src/app/tape/mapplication.h
+++ b/src/app/tape/mapplication.h
@@ -29,11 +29,10 @@
 #ifndef MAPPLICATION_H
 #define MAPPLICATION_H
 
-#include <QApplication>
-
 #include "../vpatterndb/vtranslatevars.h"
 #include "../vmisc/def.h"
 #include "../vmisc/vtapesettings.h"
+#include "../vmisc/vabstractapplication.h"
 
 class MApplication;// use in define
 class TMainWindow;
@@ -42,9 +41,9 @@ class QLocalServer;
 #if defined(qApp)
 #undef qApp
 #endif
-#define qApp (static_cast<MApplication*>(QApplication::instance()))
+#define qApp (static_cast<MApplication*>(VAbstractApplication::instance()))
 
-class MApplication : public QApplication
+class MApplication : public VAbstractApplication
 {
     Q_OBJECT
 
@@ -65,14 +64,11 @@ public:
     virtual const VTranslateVars *TrVars();
     void InitTrVars();
 
-    void      OpenSettings();
-    VTapeSettings *Settings();
+    virtual void  OpenSettings() Q_DECL_OVERRIDE;
+    VTapeSettings *TapeSettings();
 
     QString translationsPath() const;
 
-    template <typename T>
-    QString LocaleToString(const T &value);
-
 public slots:
     TMainWindow *NewMainWindow();
 
@@ -86,22 +82,7 @@ private:
     QLocalServer *localServer;
     VTranslateVars *trVars;
 
-    /**
-     * @brief settings pointer to settings. Help hide constructor creation settings. Make make code more readable.
-     */
-    VTapeSettings *settings;
-
     void Clean();
 };
 
-
-//---------------------------------------------------------------------------------------------------------------------
-template <typename T>
-inline QString MApplication::LocaleToString(const T &value)
-{
-    QLocale loc;
-    qApp->Settings()->GetOsSeparator() ? loc = QLocale::system() : loc = QLocale(QLocale::C);
-    return loc.toString(value);
-}
-
 #endif // MAPPLICATION_H
diff --git a/src/app/tape/tape.pro b/src/app/tape/tape.pro
index 0900fa403..348700794 100644
--- a/src/app/tape/tape.pro
+++ b/src/app/tape/tape.pro
@@ -141,6 +141,19 @@ CONFIG(debug, debug|release){
 # Path to recource file.
 win32:RC_FILE = share/resources/tape.rc
 
+# When the GNU linker sees a library, it discards all symbols that it doesn't need.
+# Add dependent library the first.
+
+#VTools static library (depend on VWidgets, VMisc, VPatternDB)
+unix|win32: LIBS += -L$$OUT_PWD/../../libs/vtools/$${DESTDIR}/ -lvtools
+
+INCLUDEPATH += $$PWD/../../libs/vtools
+INCLUDEPATH += $$OUT_PWD/../../libs/vtools/$${UI_DIR} # For UI files
+DEPENDPATH += $$PWD/../../libs/vtools
+
+win32:!win32-g++: PRE_TARGETDEPS += $$OUT_PWD/../../libs/vtools/$${DESTDIR}/vtools.lib
+else:unix|win32-g++: PRE_TARGETDEPS += $$OUT_PWD/../../libs/vtools/$${DESTDIR}/libvtools.a
+
 #VWidgets static library
 unix|win32: LIBS += -L$$OUT_PWD/../../libs/vwidgets/$${DESTDIR}/ -lvwidgets
 
@@ -212,6 +225,14 @@ else:unix: LIBS += -L$${OUT_PWD}/../../libs/qmuparser/$${DESTDIR} -lqmuparser
 INCLUDEPATH += $${PWD}/../../libs/qmuparser
 DEPENDPATH += $${PWD}/../../libs/qmuparser
 
+# VPropertyExplorer library
+win32:CONFIG(release, debug|release): LIBS += -L$${OUT_PWD}/../../libs/vpropertyexplorer/$${DESTDIR} -lvpropertyexplorer
+else:win32:CONFIG(debug, debug|release): LIBS += -L$${OUT_PWD}/../../libs/vpropertyexplorer/$${DESTDIR} -lvpropertyexplorer
+else:unix: LIBS += -L$${OUT_PWD}/../../libs/vpropertyexplorer/$${DESTDIR} -lvpropertyexplorer
+
+INCLUDEPATH += $${PWD}/../../libs/vpropertyexplorer
+DEPENDPATH += $${PWD}/../../libs/vpropertyexplorer
+
 noDebugSymbols{ # For enable run qmake with CONFIG+=noDebugSymbols
     # do nothing
 } else {
diff --git a/src/app/tape/tmainwindow.cpp b/src/app/tape/tmainwindow.cpp
index ef8372a3f..29418c6c0 100644
--- a/src/app/tape/tmainwindow.cpp
+++ b/src/app/tape/tmainwindow.cpp
@@ -28,12 +28,13 @@
 
 #include "tmainwindow.h"
 #include "ui_tmainwindow.h"
-#include "mapplication.h"
 #include "dialogs/dialogabouttape.h"
 #include "dialogs/dialognewmeasurements.h"
 #include "../vpatterndb/calculator.h"
 #include "../ifc/ifcdef.h"
 #include "../qmuparser/qmudef.h"
+#include "../vtools/dialogs/support/dialogeditwrongformula.h"
+#include "mapplication.h" // Should be last because of definning qApp
 
 #include <QFileDialog>
 #include <QFileInfo>
@@ -196,11 +197,11 @@ void TMainWindow::FileSaveAs()
     {
         if (mType == MeasurementsType::Individual)
         {
-            dir = qApp->Settings()->GetPathStandardMeasurements() + "/" + fName;
+            dir = qApp->TapeSettings()->GetPathStandardMeasurements() + "/" + fName;
         }
         else
         {
-            dir = qApp->Settings()->GetPathIndividualMeasurements() + "/" + fName;
+            dir = qApp->TapeSettings()->GetPathIndividualMeasurements() + "/" + fName;
         }
 
     }
@@ -477,6 +478,45 @@ void TMainWindow::MoveDown()
     Controls(); // Buttons remove, up, down
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void TMainWindow::Fx()
+{
+    const int row = ui->tableWidget->currentRow();
+
+    if (row == -1)
+    {
+        return;
+    }
+
+    QTableWidgetItem *nameField = ui->tableWidget->item(row, 0);
+    QSharedPointer<VMeasurement> meash = data->GetVariable<VMeasurement>(nameField->text());
+
+    DialogEditWrongFormula *dialog = new DialogEditWrongFormula(meash->GetData(), NULL_ID, this);
+    dialog->setWindowTitle(tr("Edit measurement"));
+
+    QString text = ui->plainTextEditFormula->toPlainText();
+    text.replace("\n", " ");
+
+    dialog->SetFormula(text);
+    const QString postfix = VDomDocument::UnitsToStr(mUnit, true);//Show unit in dialog lable (cm, mm or inch)
+    dialog->setPostfix(postfix);
+
+    if (dialog->exec() == QDialog::Accepted)
+    {
+        m->SetMValue(nameField->text(), dialog->GetFormula());
+
+        MeasurementsWasSaved(false);
+
+        RefreshData();
+
+        ui->tableWidget->selectRow(row);
+        ui->tableWidget->resizeColumnsToContents();
+        ui->tableWidget->resizeRowsToContents();
+        ui->tableWidget->horizontalHeader()->setStretchLastSection(true);
+    }
+    delete dialog;
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 void TMainWindow::AddCustom()
 {
@@ -726,13 +766,13 @@ void TMainWindow::SaveMValue()
         return;
     }
 
-    QTableWidgetItem *nameField = ui->tableWidget->item(ui->tableWidget->currentRow(), 0);
+    QTableWidgetItem *nameField = ui->tableWidget->item(row, 0);
 
     // Replace line return character with spaces for calc if exist
     QString text = ui->plainTextEditFormula->toPlainText();
     text.replace("\n", " ");
 
-    QTableWidgetItem *formulaField = ui->tableWidget->item(ui->tableWidget->currentRow(), 2);
+    QTableWidgetItem *formulaField = ui->tableWidget->item(row, 2);
     if (formulaField->text() == text)
     {
         return;
@@ -1016,6 +1056,8 @@ void TMainWindow::InitWindow()
         this->formulaBaseHeight = ui->plainTextEditFormula->height();
         connect(ui->plainTextEditFormula, &QPlainTextEdit::textChanged, this, &TMainWindow::SaveMValue,
                 Qt::UniqueConnection);
+
+        connect(ui->toolButtonExpr, &QToolButton::clicked, this, &TMainWindow::Fx);
     }
 
     ui->actionAddCustom->setEnabled(true);
diff --git a/src/app/tape/tmainwindow.h b/src/app/tape/tmainwindow.h
index 2f364b95c..df680357c 100644
--- a/src/app/tape/tmainwindow.h
+++ b/src/app/tape/tmainwindow.h
@@ -75,6 +75,7 @@ private slots:
     void Remove();
     void MoveUp();
     void MoveDown();
+    void Fx();
 
     void AddCustom();
     void AddKnown();
diff --git a/src/app/valentina/core/vapplication.cpp b/src/app/valentina/core/vapplication.cpp
index c86352e18..a2ab50770 100644
--- a/src/app/valentina/core/vapplication.cpp
+++ b/src/app/valentina/core/vapplication.cpp
@@ -484,7 +484,7 @@ void VApplication::InitOptions()
     qDebug()<<"Command-line arguments:"<<this->arguments();
     qDebug()<<"Process ID:"<<this->applicationPid();
 
-    const QString checkedLocale = Settings()->GetLocale();
+    const QString checkedLocale = ValentinaSettings()->GetLocale();
     qDebug()<<"Checked locale:"<<checkedLocale;
 
     QTranslator *qtTranslator = new QTranslator(this);
@@ -576,7 +576,26 @@ const VTranslateVars *VApplication::TrVars()
 //---------------------------------------------------------------------------------------------------------------------
 void VApplication::InitTrVars()
 {
-    trVars = new VTranslateVars(Settings()->GetOsSeparator());
+    trVars = new VTranslateVars(ValentinaSettings()->GetOsSeparator());
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+/**
+ * @brief OpenSettings get acsses to application settings.
+ *
+ * Because we can create object in constructor we open file separately.
+ */
+void VApplication::OpenSettings()
+{
+    settings = new VSettings(QSettings::IniFormat, QSettings::UserScope, QApplication::organizationName(),
+                             QApplication::applicationName(), this);
+}
+
+//---------------------------------------------------------------------------------------------------------------------
+VSettings *VApplication::ValentinaSettings()
+{
+    SCASSERT(settings != nullptr);
+    return qobject_cast<VSettings *>(settings);
 }
 
 #if defined(Q_OS_WIN) && defined(Q_CC_GNU)
diff --git a/src/app/valentina/core/vapplication.h b/src/app/valentina/core/vapplication.h
index b4c1a2ae2..d45f79b3d 100644
--- a/src/app/valentina/core/vapplication.h
+++ b/src/app/valentina/core/vapplication.h
@@ -84,6 +84,9 @@ public:
     void               CollectReports() const;
 #endif // defined(Q_OS_WIN) && defined(Q_CC_GNU)
 
+    virtual void OpenSettings() Q_DECL_OVERRIDE;
+    VSettings *ValentinaSettings();
+
 private slots:
 #if defined(Q_OS_WIN) && defined(Q_CC_GNU)
     void               CleanGist() const;
diff --git a/src/app/valentina/dialogs/configdialog.cpp b/src/app/valentina/dialogs/configdialog.cpp
index 77c25891c..fbd13a12b 100644
--- a/src/app/valentina/dialogs/configdialog.cpp
+++ b/src/app/valentina/dialogs/configdialog.cpp
@@ -93,7 +93,7 @@ ConfigDialog::ConfigDialog(QWidget *parent) :
     setWindowTitle(tr("Config Dialog"));
 
     this->setFixedSize(QSize(750, 550));
-    qApp->Settings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
+    qApp->ValentinaSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
 }
 
 //---------------------------------------------------------------------------------------------------------------------
@@ -157,7 +157,7 @@ void ConfigDialog::Apply()
         default:
             break;
     }
-    qApp->Settings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
+    qApp->ValentinaSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
     emit UpdateProperties();
     setResult(QDialog::Accepted);
 }
diff --git a/src/app/valentina/dialogs/configpages/communitypage.cpp b/src/app/valentina/dialogs/configpages/communitypage.cpp
index 9cd3729b7..638337312 100644
--- a/src/app/valentina/dialogs/configpages/communitypage.cpp
+++ b/src/app/valentina/dialogs/configpages/communitypage.cpp
@@ -57,17 +57,17 @@ CommunityPage::CommunityPage(QWidget *parent):
 //---------------------------------------------------------------------------------------------------------------------
 void CommunityPage::Apply()
 {
-    qApp->Settings()->SetServer(this->server->text());
-    qApp->Settings()->SetServerSecure(this->secureComm->isChecked());
-    qApp->Settings()->SetProxy(this->useProxy->isChecked());
-    qApp->Settings()->SetProxyAddress(this->proxyAddress->text());
-    qApp->Settings()->SetProxyPort(this->proxyPort->text());
-    qApp->Settings()->SetProxyUser(this->proxyUser->text());
-    qApp->Settings()->SetProxyPass(this->proxyPass->text());
+    qApp->ValentinaSettings()->SetServer(this->server->text());
+    qApp->ValentinaSettings()->SetServerSecure(this->secureComm->isChecked());
+    qApp->ValentinaSettings()->SetProxy(this->useProxy->isChecked());
+    qApp->ValentinaSettings()->SetProxyAddress(this->proxyAddress->text());
+    qApp->ValentinaSettings()->SetProxyPort(this->proxyPort->text());
+    qApp->ValentinaSettings()->SetProxyUser(this->proxyUser->text());
+    qApp->ValentinaSettings()->SetProxyPass(this->proxyPass->text());
 
-    qApp->Settings()->SetUsername(this->username->text());
-    qApp->Settings()->SetSavePassword(this->savePassword->isChecked());
-    qApp->Settings()->SetUserPassword(this->userpassword->text());
+    qApp->ValentinaSettings()->SetUsername(this->username->text());
+    qApp->ValentinaSettings()->SetSavePassword(this->savePassword->isChecked());
+    qApp->ValentinaSettings()->SetUserPassword(this->userpassword->text());
 
 }
 
@@ -102,9 +102,9 @@ QGroupBox *CommunityPage::ServerGroup()
     QGroupBox *ServerGroup = new QGroupBox(tr("Server"));
     QFormLayout *serverLayout = new QFormLayout;
 
-    CommunityPage::add_lineedit(&this->server, serverLayout, qApp->Settings()->GetServer(), tr("Server name/IP"));
+    CommunityPage::add_lineedit(&this->server, serverLayout, qApp->ValentinaSettings()->GetServer(), tr("Server name/IP"));
 
-    CommunityPage::add_checkbox(&this->secureComm, serverLayout, qApp->Settings()->GetServerSecure(),
+    CommunityPage::add_checkbox(&this->secureComm, serverLayout, qApp->ValentinaSettings()->GetServerSecure(),
                                 tr("Secure connection"));
 
     ServerGroup->setLayout(serverLayout);
@@ -136,12 +136,12 @@ QGroupBox *CommunityPage::ProxyGroup()
 
     QFormLayout *proxyLayout = new QFormLayout;
 
-    CommunityPage::add_checkbox(&this->useProxy, proxyLayout, qApp->Settings()->GetProxy(), tr("Use Proxy"));
-    CommunityPage::add_lineedit(&this->proxyAddress, proxyLayout, qApp->Settings()->GetProxyAddress(),
+    CommunityPage::add_checkbox(&this->useProxy, proxyLayout, qApp->ValentinaSettings()->GetProxy(), tr("Use Proxy"));
+    CommunityPage::add_lineedit(&this->proxyAddress, proxyLayout, qApp->ValentinaSettings()->GetProxyAddress(),
                                 tr("Proxy address"));
-    CommunityPage::add_lineedit(&this->proxyPort, proxyLayout, qApp->Settings()->GetProxyPort(), tr("Proxy port"));
-    CommunityPage::add_lineedit(&this->proxyUser, proxyLayout, qApp->Settings()->GetProxyUser(), tr("Proxy user"));
-    CommunityPage::add_lineedit(&this->proxyPass, proxyLayout, qApp->Settings()->GetProxyPass(), tr("Proxy pass"));
+    CommunityPage::add_lineedit(&this->proxyPort, proxyLayout, qApp->ValentinaSettings()->GetProxyPort(), tr("Proxy port"));
+    CommunityPage::add_lineedit(&this->proxyUser, proxyLayout, qApp->ValentinaSettings()->GetProxyUser(), tr("Proxy user"));
+    CommunityPage::add_lineedit(&this->proxyPass, proxyLayout, qApp->ValentinaSettings()->GetProxyPass(), tr("Proxy pass"));
     connect(this->useProxy, &QCheckBox::stateChanged, this, &CommunityPage::ProxyCheckChanged);
     this->ProxyCheckChanged();
 
@@ -156,10 +156,10 @@ QGroupBox *CommunityPage::UserGroup()
     QGroupBox *userGroup = new QGroupBox(tr("User settings"));
     QFormLayout *userLayout = new QFormLayout;
 
-    CommunityPage::add_lineedit(&this->username, userLayout, qApp->Settings()->GetUsername(), tr("User Name"));
-    CommunityPage::add_checkbox(&this->savePassword, userLayout, qApp->Settings()->GetSavePassword(),
+    CommunityPage::add_lineedit(&this->username, userLayout, qApp->ValentinaSettings()->GetUsername(), tr("User Name"));
+    CommunityPage::add_checkbox(&this->savePassword, userLayout, qApp->ValentinaSettings()->GetSavePassword(),
                                 tr("Save password"));
-    CommunityPage::add_lineedit(&this->userpassword, userLayout, qApp->Settings()->GetUserPassword(),
+    CommunityPage::add_lineedit(&this->userpassword, userLayout, qApp->ValentinaSettings()->GetUserPassword(),
                                 tr("Password"));
 
     connect(this->savePassword, &QCheckBox::stateChanged, this, &CommunityPage::PasswordCheckChanged);
diff --git a/src/app/valentina/dialogs/configpages/configurationpage.cpp b/src/app/valentina/dialogs/configpages/configurationpage.cpp
index b1b0f9806..10f0aa181 100644
--- a/src/app/valentina/dialogs/configpages/configurationpage.cpp
+++ b/src/app/valentina/dialogs/configpages/configurationpage.cpp
@@ -67,23 +67,23 @@ ConfigurationPage::ConfigurationPage(QWidget *parent)
 //---------------------------------------------------------------------------------------------------------------------
 void ConfigurationPage::Apply()
 {
-    qApp->Settings()->SetAutosaveState(autoSaveCheck->isChecked());
-    qApp->Settings()->SetAutosaveTime(autoTime->value());
+    qApp->ValentinaSettings()->SetAutosaveState(autoSaveCheck->isChecked());
+    qApp->ValentinaSettings()->SetAutosaveTime(autoTime->value());
 
     QTimer *autoSaveTimer = qApp->getAutoSaveTimer();
     SCASSERT(autoSaveTimer);
 
     autoSaveCheck->isChecked() ? autoSaveTimer->start(autoTime->value()*60000) : autoSaveTimer->stop();
 
-    qApp->Settings()->SetOsSeparator(osOptionCheck->isChecked());
-    qApp->Settings()->SetSendReportState(sendReportCheck->isChecked());
-    qApp->Settings()->SetConfirmItemDelete(askPointDeletionCheck->isChecked());
-    qApp->Settings()->SetToolBarStyle(toolBarStyleCheck->isChecked());
+    qApp->ValentinaSettings()->SetOsSeparator(osOptionCheck->isChecked());
+    qApp->ValentinaSettings()->SetSendReportState(sendReportCheck->isChecked());
+    qApp->ValentinaSettings()->SetConfirmItemDelete(askPointDeletionCheck->isChecked());
+    qApp->ValentinaSettings()->SetToolBarStyle(toolBarStyleCheck->isChecked());
 
     if (langChanged)
     {
         const QString locale = qvariant_cast<QString>(langCombo->itemData(langCombo->currentIndex()));
-        qApp->Settings()->SetLocale(locale);
+        qApp->ValentinaSettings()->SetLocale(locale);
         langChanged = false;
         const QString text = tr("Setup user interface language updated and will be used the next time start") + " " +
                                 QApplication::applicationName();
@@ -92,7 +92,7 @@ void ConfigurationPage::Apply()
     if (this->unitChanged)
     {
         const QString unit = qvariant_cast<QString>(this->unitCombo->itemData(this->unitCombo->currentIndex()));
-        qApp->Settings()->SetUnit(unit);
+        qApp->ValentinaSettings()->SetUnit(unit);
         this->unitChanged = false;
         const QString text = tr("Default unit updated and will be used the next pattern creation");
         QMessageBox::information(this, QApplication::applicationName(), text);
@@ -100,7 +100,7 @@ void ConfigurationPage::Apply()
     if (labelLangChanged)
     {
         const QString locale = qvariant_cast<QString>(labelCombo->itemData(labelCombo->currentIndex()));
-        qApp->Settings()->SetLabelLanguage(locale);
+        qApp->ValentinaSettings()->SetLabelLanguage(locale);
         labelLangChanged = false;
     }
 }
@@ -129,11 +129,11 @@ QGroupBox *ConfigurationPage::SaveGroup()
     QGroupBox *saveGroup = new QGroupBox(tr("Save"));
 
     autoSaveCheck = new QCheckBox(tr("Auto-save modified pattern"));
-    autoSaveCheck->setChecked(qApp->Settings()->GetAutosaveState());
+    autoSaveCheck->setChecked(qApp->ValentinaSettings()->GetAutosaveState());
 
     autoTime = new QSpinBox();
     autoTime->setRange(1, 60);
-    autoTime->setValue(qApp->Settings()->GetAutosaveTime());
+    autoTime->setValue(qApp->ValentinaSettings()->GetAutosaveTime());
     autoTime->setSuffix(tr("min"));
 
     QHBoxLayout *autosaveLayout = new QHBoxLayout;
@@ -181,7 +181,7 @@ QGroupBox *ConfigurationPage::LangGroup()
     }
 
     // set default translators and language checked
-    qint32 index = langCombo->findData(qApp->Settings()->GetLocale());
+    qint32 index = langCombo->findData(qApp->ValentinaSettings()->GetLocale());
     if (index != -1)
     {
         langCombo->setCurrentIndex(index);
@@ -197,7 +197,7 @@ QGroupBox *ConfigurationPage::LangGroup()
     QLabel *separatorLabel = new QLabel(tr("Decimal separator parts"));
 
     osOptionCheck = new QCheckBox(tr("With OS options (%1)").arg(QLocale::system().decimalPoint().toLatin1()));
-    osOptionCheck->setChecked(qApp->Settings()->GetOsSeparator());
+    osOptionCheck->setChecked(qApp->ValentinaSettings()->GetOsSeparator());
 
     QHBoxLayout *separatorLayout = new QHBoxLayout;
     separatorLayout->addWidget(separatorLabel);
@@ -212,7 +212,7 @@ QGroupBox *ConfigurationPage::LangGroup()
     this->unitCombo->addItem(tr("Inches"), "in");
 
     // set default unit
-    qint32 indexUnit = this->unitCombo->findData(qApp->Settings()->GetUnit());
+    qint32 indexUnit = this->unitCombo->findData(qApp->ValentinaSettings()->GetUnit());
     if (indexUnit != -1)
     {
         this->unitCombo->setCurrentIndex(indexUnit);
@@ -231,7 +231,7 @@ QGroupBox *ConfigurationPage::LangGroup()
 
     SetLabelComboBox(VApplication::LabelLanguages());
 
-    index = labelCombo->findData(qApp->Settings()->GetLabelLanguage());
+    index = labelCombo->findData(qApp->ValentinaSettings()->GetLabelLanguage());
     if (index != -1)
     {
         labelCombo->setCurrentIndex(index);
@@ -261,7 +261,7 @@ QGroupBox *ConfigurationPage::SendGroup()
     QGroupBox *sendGroup = new QGroupBox(tr("Send crash reports"));
 
     sendReportCheck = new QCheckBox(tr("Send crash reports (recommended)"));
-    sendReportCheck->setChecked(qApp->Settings()->GetSendReportState());
+    sendReportCheck->setChecked(qApp->ValentinaSettings()->GetSendReportState());
 
     QLabel *description = new QLabel(tr("After each crash Valentina collect information that may help us fix a "
                                         "problem. We do not collect any personal information. Find more about what "
@@ -286,7 +286,7 @@ QGroupBox *ConfigurationPage::DrawGroup()
     QGroupBox *drawGroup = new QGroupBox(tr("Pattern Editing"));
 
     askPointDeletionCheck = new QCheckBox(tr("Confirm item deletion"));
-    askPointDeletionCheck->setChecked(qApp->Settings()->GetConfirmItemDelete());
+    askPointDeletionCheck->setChecked(qApp->ValentinaSettings()->GetConfirmItemDelete());
 
     QVBoxLayout *editLayout = new QVBoxLayout;
     editLayout->addWidget(askPointDeletionCheck);
@@ -301,7 +301,7 @@ QGroupBox *ConfigurationPage::ToolBarGroup()
     QGroupBox *toolBarGroup = new QGroupBox(tr("Toolbar"));
 
     toolBarStyleCheck = new QCheckBox(tr("The text appears under the icon. (recommended for beginners.)"));
-    toolBarStyleCheck->setChecked(qApp->Settings()->GetToolBarStyle());
+    toolBarStyleCheck->setChecked(qApp->ValentinaSettings()->GetToolBarStyle());
 
     QVBoxLayout *editLayout = new QVBoxLayout;
     editLayout->addWidget(toolBarStyleCheck);
diff --git a/src/app/valentina/dialogs/configpages/pathpage.cpp b/src/app/valentina/dialogs/configpages/pathpage.cpp
index bebabc3e1..6df397248 100644
--- a/src/app/valentina/dialogs/configpages/pathpage.cpp
+++ b/src/app/valentina/dialogs/configpages/pathpage.cpp
@@ -62,10 +62,10 @@ PathPage::PathPage(QWidget *parent)
 //---------------------------------------------------------------------------------------------------------------------
 void PathPage::Apply()
 {
-    qApp->Settings()->SetPathIndividualMeasurements(pathTable->item(0, 1)->text());
-    qApp->Settings()->SetPathStandardMeasurements(pathTable->item(1, 1)->text());
-    qApp->Settings()->SetPathPattern(pathTable->item(2, 1)->text());
-    qApp->Settings()->SetPathLayout(pathTable->item(3, 1)->text());
+    qApp->ValentinaSettings()->SetPathIndividualMeasurements(pathTable->item(0, 1)->text());
+    qApp->ValentinaSettings()->SetPathStandardMeasurements(pathTable->item(1, 1)->text());
+    qApp->ValentinaSettings()->SetPathPattern(pathTable->item(2, 1)->text());
+    qApp->ValentinaSettings()->SetPathLayout(pathTable->item(3, 1)->text());
 }
 
 //---------------------------------------------------------------------------------------------------------------------
@@ -88,8 +88,8 @@ void PathPage::DefaultPath()
     switch (row)
     {
         case 1: // standard measurements
-            item->setText(qApp->Settings()->StandardTablesPath());
-            item->setToolTip(qApp->Settings()->StandardTablesPath());
+            item->setText(qApp->ValentinaSettings()->StandardTablesPath());
+            item->setToolTip(qApp->ValentinaSettings()->StandardTablesPath());
             break;
         case 0: // individual measurements
         case 2: // pattern path
@@ -113,16 +113,16 @@ void PathPage::EditPath()
     switch (row)
     {
         case 0: // individual measurements
-            path = qApp->Settings()->GetPathIndividualMeasurements();
+            path = qApp->ValentinaSettings()->GetPathIndividualMeasurements();
             break;
         case 1: // standard measurements
-            path = qApp->Settings()->GetPathStandardMeasurements();
+            path = qApp->ValentinaSettings()->GetPathStandardMeasurements();
             break;
         case 2: // pattern path
-            path = qApp->Settings()->GetPathPattern();
+            path = qApp->ValentinaSettings()->GetPathPattern();
             break;
         case 3: // layout path
-            path = qApp->Settings()->GetPathLayout();
+            path = qApp->ValentinaSettings()->GetPathLayout();
             break;
         default:
             break;
@@ -182,29 +182,29 @@ void PathPage::InitTable()
 
     {
         pathTable->setItem(0, 0, new QTableWidgetItem(tr("Individual measurements")));
-        QTableWidgetItem *item = new QTableWidgetItem(qApp->Settings()->GetPathIndividualMeasurements());
-        item->setToolTip(qApp->Settings()->GetPathIndividualMeasurements());
+        QTableWidgetItem *item = new QTableWidgetItem(qApp->ValentinaSettings()->GetPathIndividualMeasurements());
+        item->setToolTip(qApp->ValentinaSettings()->GetPathIndividualMeasurements());
         pathTable->setItem(0, 1, item);
     }
 
     {
         pathTable->setItem(1, 0, new QTableWidgetItem(tr("Standard measurements")));
-        QTableWidgetItem *item = new QTableWidgetItem(qApp->Settings()->GetPathStandardMeasurements());
-        item->setToolTip(qApp->Settings()->GetPathStandardMeasurements());
+        QTableWidgetItem *item = new QTableWidgetItem(qApp->ValentinaSettings()->GetPathStandardMeasurements());
+        item->setToolTip(qApp->ValentinaSettings()->GetPathStandardMeasurements());
         pathTable->setItem(1, 1, item);
     }
 
     {
         pathTable->setItem(2, 0, new QTableWidgetItem(tr("Patterns")));
-        QTableWidgetItem *item = new QTableWidgetItem(qApp->Settings()->GetPathPattern());
-        item->setToolTip(qApp->Settings()->GetPathPattern());
+        QTableWidgetItem *item = new QTableWidgetItem(qApp->ValentinaSettings()->GetPathPattern());
+        item->setToolTip(qApp->ValentinaSettings()->GetPathPattern());
         pathTable->setItem(2, 1, item);
     }
 
     {
         pathTable->setItem(3, 0, new QTableWidgetItem(tr("Layout")));
-        QTableWidgetItem *item = new QTableWidgetItem(qApp->Settings()->GetPathLayout());
-        item->setToolTip(qApp->Settings()->GetPathLayout());
+        QTableWidgetItem *item = new QTableWidgetItem(qApp->ValentinaSettings()->GetPathLayout());
+        item->setToolTip(qApp->ValentinaSettings()->GetPathLayout());
         pathTable->setItem(3, 1, item);
     }
 
diff --git a/src/app/valentina/dialogs/configpages/patternpage.cpp b/src/app/valentina/dialogs/configpages/patternpage.cpp
index 3360e7dc1..744b5fe12 100644
--- a/src/app/valentina/dialogs/configpages/patternpage.cpp
+++ b/src/app/valentina/dialogs/configpages/patternpage.cpp
@@ -58,17 +58,17 @@ PatternPage::PatternPage(QWidget *parent):
 //---------------------------------------------------------------------------------------------------------------------
 void PatternPage::Apply()
 {
-    qApp->Settings()->SetUser(userName->text());
+    qApp->ValentinaSettings()->SetUser(userName->text());
 
     // Scene antialiasing
-    qApp->Settings()->SetGraphicalOutput(graphOutputCheck->isChecked());
+    qApp->ValentinaSettings()->SetGraphicalOutput(graphOutputCheck->isChecked());
     qApp->getSceneView()->setRenderHint(QPainter::Antialiasing, graphOutputCheck->isChecked());
     qApp->getSceneView()->setRenderHint(QPainter::SmoothPixmapTransform, graphOutputCheck->isChecked());
 
     /* Maximum number of commands in undo stack may only be set when the undo stack is empty, since setting it on a
      * non-empty stack might delete the command at the current index. Calling setUndoLimit() on a non-empty stack
      * prints a warning and does nothing.*/
-    qApp->Settings()->SetUndoCount(undoCount->value());
+    qApp->ValentinaSettings()->SetUndoCount(undoCount->value());
 }
 
 //---------------------------------------------------------------------------------------------------------------------
@@ -78,7 +78,7 @@ QGroupBox *PatternPage::UserGroup()
     QLabel *nameLabel = new QLabel(tr("User name"));
 
     userName = new QLineEdit;
-    userName->setText(qApp->Settings()->GetUser());
+    userName->setText(qApp->ValentinaSettings()->GetUser());
 
     QHBoxLayout *nameLayout = new QHBoxLayout;
     nameLayout->addWidget(nameLabel);
@@ -96,7 +96,7 @@ QGroupBox *PatternPage::GraphOutputGroup()
     QGroupBox *graphOutputGroup = new QGroupBox(tr("Graphical output"));
 
     graphOutputCheck = new QCheckBox(tr("Use antialiasing"));
-    graphOutputCheck->setChecked(qApp->Settings()->GetGraphicalOutput());
+    graphOutputCheck->setChecked(qApp->ValentinaSettings()->GetGraphicalOutput());
 
     QHBoxLayout *graphLayout = new QHBoxLayout;
     graphLayout->addWidget(graphOutputCheck);
@@ -114,7 +114,7 @@ QGroupBox *PatternPage::UndoGroup()
     QLabel *undoLabel = new QLabel(tr("Count steps (0 - no limit)"));
     undoCount = new QSpinBox;
     undoCount->setMinimum(0);
-    undoCount->setValue(qApp->Settings()->GetUndoCount());
+    undoCount->setValue(qApp->ValentinaSettings()->GetUndoCount());
 
     QHBoxLayout *countLayout = new QHBoxLayout;
     countLayout->addWidget(undoLabel);
diff --git a/src/app/valentina/dialogs/dialogaboutapp.cpp b/src/app/valentina/dialogs/dialogaboutapp.cpp
index 6ad3b4e8b..d63d12593 100644
--- a/src/app/valentina/dialogs/dialogaboutapp.cpp
+++ b/src/app/valentina/dialogs/dialogaboutapp.cpp
@@ -42,7 +42,7 @@ DialogAboutApp::DialogAboutApp(QWidget *parent) :
 {
     ui->setupUi(this);
 
-    qApp->Settings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
+    qApp->ValentinaSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
 
     ui->label_Valentina_Version->setText(QString("Valentina %1").arg(APP_VERSION_STR));
     ui->labelBuildRevision->setText(QString("Build revision: %1").arg(BUILD_REVISION));
diff --git a/src/app/valentina/dialogs/dialogindividualmeasurements.cpp b/src/app/valentina/dialogs/dialogindividualmeasurements.cpp
index 6526eb1fa..4cc22e06c 100644
--- a/src/app/valentina/dialogs/dialogindividualmeasurements.cpp
+++ b/src/app/valentina/dialogs/dialogindividualmeasurements.cpp
@@ -47,7 +47,7 @@ DialogIndividualMeasurements::DialogIndividualMeasurements(VContainer *data, con
 {
     ui->setupUi(this);
 
-    qApp->Settings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
+    qApp->ValentinaSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
 
     QRect position = this->frameGeometry();
     position.moveCenter(QDesktopWidget().availableGeometry().center());
@@ -203,7 +203,7 @@ void DialogIndividualMeasurements::CheckState()
 void DialogIndividualMeasurements::OpenTable()
 {
     const QString filter(tr("Individual measurements (*.vit)"));
-    const QString path = qApp->Settings()->GetPathIndividualMeasurements();
+    const QString path = qApp->ValentinaSettings()->GetPathIndividualMeasurements();
 
     QString fileName = QFileDialog::getOpenFileName(this, tr("Open file"), path, filter);
     if (fileName.isEmpty())
@@ -232,7 +232,7 @@ void DialogIndividualMeasurements::OpenTable()
 //---------------------------------------------------------------------------------------------------------------------
 void DialogIndividualMeasurements::NewTable()
 {
-    const QString dir = qApp->Settings()->GetPathIndividualMeasurements()+"/measurements.vit";
+    const QString dir = qApp->ValentinaSettings()->GetPathIndividualMeasurements()+"/measurements.vit";
     QString name = QFileDialog::getSaveFileName(this, tr("Where save measurements?"), dir,
                                                 tr("Individual measurements (*.vit)"));
 
@@ -260,7 +260,7 @@ void DialogIndividualMeasurements::InitUnits()
     ui->comboBoxUnits->addItem(tr("Inches"), QVariant(VDomDocument::UnitsToStr(Unit::Inch)));
 
     // set default unit
-    const qint32 indexUnit = ui->comboBoxUnits->findData(qApp->Settings()->GetUnit());
+    const qint32 indexUnit = ui->comboBoxUnits->findData(qApp->ValentinaSettings()->GetUnit());
     if (indexUnit != -1)
     {
         ui->comboBoxUnits->setCurrentIndex(indexUnit);
diff --git a/src/app/valentina/dialogs/dialoglayoutprogress.cpp b/src/app/valentina/dialogs/dialoglayoutprogress.cpp
index a0c711bc7..aa5b3bde8 100644
--- a/src/app/valentina/dialogs/dialoglayoutprogress.cpp
+++ b/src/app/valentina/dialogs/dialoglayoutprogress.cpp
@@ -41,7 +41,7 @@ DialogLayoutProgress::DialogLayoutProgress(int count, QWidget *parent)
 {
     ui->setupUi(this);
 
-    qApp->Settings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
+    qApp->ValentinaSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
 
     ui->progressBar->setMaximum(maxCount);
     ui->progressBar->setValue(0);
diff --git a/src/app/valentina/dialogs/dialoglayoutsettings.cpp b/src/app/valentina/dialogs/dialoglayoutsettings.cpp
index 710dd5036..3f2788939 100644
--- a/src/app/valentina/dialogs/dialoglayoutsettings.cpp
+++ b/src/app/valentina/dialogs/dialoglayoutsettings.cpp
@@ -52,7 +52,7 @@ DialogLayoutSettings::DialogLayoutSettings(VLayoutGenerator *generator, QWidget
 {
     ui->setupUi(this);
 
-    qApp->Settings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
+    qApp->ValentinaSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
 
     ReadSettings();
 
@@ -363,8 +363,8 @@ void DialogLayoutSettings::InitPaperUnits()
     ui->comboBoxPaperSizeUnit->addItem(tr("Pixels"), QVariant(VDomDocument::UnitsToStr(Unit::Px)));
 
     // set default unit
-    oldPaperUnit = VDomDocument::StrToUnits(qApp->Settings()->GetUnit());
-    const qint32 indexUnit = ui->comboBoxPaperSizeUnit->findData(qApp->Settings()->GetUnit());
+    oldPaperUnit = VDomDocument::StrToUnits(qApp->ValentinaSettings()->GetUnit());
+    const qint32 indexUnit = ui->comboBoxPaperSizeUnit->findData(qApp->ValentinaSettings()->GetUnit());
     if (indexUnit != -1)
     {
         ui->comboBoxPaperSizeUnit->setCurrentIndex(indexUnit);
@@ -379,8 +379,8 @@ void DialogLayoutSettings::InitLayoutUnits()
     ui->comboBoxLayoutUnit->addItem(tr("Inches"), QVariant(VDomDocument::UnitsToStr(Unit::Inch)));
 
     // set default unit
-    oldLayoutUnit = VDomDocument::StrToUnits(qApp->Settings()->GetUnit());
-    const qint32 indexUnit = ui->comboBoxLayoutUnit->findData(qApp->Settings()->GetUnit());
+    oldLayoutUnit = VDomDocument::StrToUnits(qApp->ValentinaSettings()->GetUnit());
+    const qint32 indexUnit = ui->comboBoxLayoutUnit->findData(qApp->ValentinaSettings()->GetUnit());
     if (indexUnit != -1)
     {
         ui->comboBoxLayoutUnit->setCurrentIndex(indexUnit);
@@ -611,33 +611,33 @@ void DialogLayoutSettings::ReadSettings()
     MinimumPaperSize();
     MinimumLayoutSize();
 
-    SetLayoutWidth(qApp->Settings()->GetLayoutWidth());
-    SetShift(qApp->Settings()->GetLayoutShift());
+    SetLayoutWidth(qApp->ValentinaSettings()->GetLayoutWidth());
+    SetShift(qApp->ValentinaSettings()->GetLayoutShift());
 
-    const qreal width = UnitConvertor(qApp->Settings()->GetLayoutPaperWidth(), Unit::Px, LayoutUnit());
-    const qreal height = UnitConvertor(qApp->Settings()->GetLayoutPaperHeight(), Unit::Px, LayoutUnit());
+    const qreal width = UnitConvertor(qApp->ValentinaSettings()->GetLayoutPaperWidth(), Unit::Px, LayoutUnit());
+    const qreal height = UnitConvertor(qApp->ValentinaSettings()->GetLayoutPaperHeight(), Unit::Px, LayoutUnit());
     SheetSize(QSizeF(width, height));
-    SetGroup(qApp->Settings()->GetLayoutGroup());
-    SetRotate(qApp->Settings()->GetLayoutRotate());
-    SetIncrease(qApp->Settings()->GetLayoutRotationIncrease());
-    SetAutoCrop(qApp->Settings()->GetLayoutAutoCrop());
-    SetSaveLength(qApp->Settings()->GetLayoutSaveLength());
-    SetUnitePages(qApp->Settings()->GetLayoutUnitePages());
+    SetGroup(qApp->ValentinaSettings()->GetLayoutGroup());
+    SetRotate(qApp->ValentinaSettings()->GetLayoutRotate());
+    SetIncrease(qApp->ValentinaSettings()->GetLayoutRotationIncrease());
+    SetAutoCrop(qApp->ValentinaSettings()->GetLayoutAutoCrop());
+    SetSaveLength(qApp->ValentinaSettings()->GetLayoutSaveLength());
+    SetUnitePages(qApp->ValentinaSettings()->GetLayoutUnitePages());
 }
 
 //---------------------------------------------------------------------------------------------------------------------
 void DialogLayoutSettings::WriteSettings() const
 {
-    qApp->Settings()->SetLayoutWidth(GetLayoutWidth());
-    qApp->Settings()->SetLayoutGroup(GetGroup());
-    qApp->Settings()->SetLayoutPaperHeight(GetPaperHeight());
-    qApp->Settings()->SetLayoutPaperWidth(GetPaperWidth());
-    qApp->Settings()->SetLayoutShift(GetShift());
-    qApp->Settings()->SetLayoutRotate(GetRotate());
-    qApp->Settings()->SetLayoutRotationIncrease(GetIncrease());
-    qApp->Settings()->SetLayoutAutoCrop(GetAutoCrop());
-    qApp->Settings()->SetLayoutSaveLength(IsSaveLength());
-    qApp->Settings()->SetLayoutUnitePages(IsUnitePages());
+    qApp->ValentinaSettings()->SetLayoutWidth(GetLayoutWidth());
+    qApp->ValentinaSettings()->SetLayoutGroup(GetGroup());
+    qApp->ValentinaSettings()->SetLayoutPaperHeight(GetPaperHeight());
+    qApp->ValentinaSettings()->SetLayoutPaperWidth(GetPaperWidth());
+    qApp->ValentinaSettings()->SetLayoutShift(GetShift());
+    qApp->ValentinaSettings()->SetLayoutRotate(GetRotate());
+    qApp->ValentinaSettings()->SetLayoutRotationIncrease(GetIncrease());
+    qApp->ValentinaSettings()->SetLayoutAutoCrop(GetAutoCrop());
+    qApp->ValentinaSettings()->SetLayoutSaveLength(IsSaveLength());
+    qApp->ValentinaSettings()->SetLayoutUnitePages(IsUnitePages());
 }
 
 //---------------------------------------------------------------------------------------------------------------------
diff --git a/src/app/valentina/dialogs/dialogmeasurements.cpp b/src/app/valentina/dialogs/dialogmeasurements.cpp
index 4744e6043..5965a4709 100644
--- a/src/app/valentina/dialogs/dialogmeasurements.cpp
+++ b/src/app/valentina/dialogs/dialogmeasurements.cpp
@@ -36,7 +36,7 @@ DialogMeasurements::DialogMeasurements(QWidget *parent) :
 {
     ui->setupUi(this);
 
-    qApp->Settings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
+    qApp->ValentinaSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
 
     connect(ui->toolButtonStandard, &QToolButton::clicked, this, &DialogMeasurements::StandardMeasurements);
     connect(ui->toolButtonIndividual, &QToolButton::clicked, this, &DialogMeasurements::IndividualMeasurements);
diff --git a/src/app/valentina/dialogs/dialogpatternproperties.cpp b/src/app/valentina/dialogs/dialogpatternproperties.cpp
index 9d77bcd11..d9b3bed96 100644
--- a/src/app/valentina/dialogs/dialogpatternproperties.cpp
+++ b/src/app/valentina/dialogs/dialogpatternproperties.cpp
@@ -45,7 +45,7 @@ DialogPatternProperties::DialogPatternProperties(VPattern *doc, QWidget *parent)
 
     SCASSERT(doc != nullptr);
 
-    qApp->Settings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
+    qApp->ValentinaSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
 
     ui->lineEditAuthor->setText(doc->GetAuthor());
     connect(ui->lineEditAuthor, &QLineEdit::editingFinished, this, &DialogPatternProperties::DescEdited);
diff --git a/src/app/valentina/dialogs/dialogpatternxmledit.cpp b/src/app/valentina/dialogs/dialogpatternxmledit.cpp
index 21ac3d392..74a3f4763 100644
--- a/src/app/valentina/dialogs/dialogpatternxmledit.cpp
+++ b/src/app/valentina/dialogs/dialogpatternxmledit.cpp
@@ -46,7 +46,7 @@ DialogPatternXmlEdit::DialogPatternXmlEdit(QWidget *parent, VPattern *xmldoc)
 {
     ui->setupUi(this);
 
-    qApp->Settings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
+    qApp->ValentinaSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
 
     this->xmlmodel = new VXMLTreeView();
     this->doc=xmldoc;
diff --git a/src/app/valentina/dialogs/dialogsavelayout.cpp b/src/app/valentina/dialogs/dialogsavelayout.cpp
index cab670fb2..92a4901fc 100644
--- a/src/app/valentina/dialogs/dialogsavelayout.cpp
+++ b/src/app/valentina/dialogs/dialogsavelayout.cpp
@@ -43,7 +43,7 @@ DialogSaveLayout::DialogSaveLayout(const QMap<QString, QString> &formates, int c
 {
     ui->setupUi(this);
 
-    qApp->Settings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
+    qApp->ValentinaSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
 
     QPushButton *bOk = ui->buttonBox->button(QDialogButtonBox::Ok);
     SCASSERT(bOk != nullptr);
@@ -67,7 +67,7 @@ DialogSaveLayout::DialogSaveLayout(const QMap<QString, QString> &formates, int c
     connect(ui->pushButtonBrowse, &QPushButton::clicked, this, &DialogSaveLayout::Browse);
     connect(ui->lineEditPath, &QLineEdit::textChanged, this, &DialogSaveLayout::PathChanged);
 
-    ui->lineEditPath->setText(qApp->Settings()->GetPathLayout());
+    ui->lineEditPath->setText(qApp->ValentinaSettings()->GetPathLayout());
     ShowExample();//Show example for current format.
 
     adjustSize();
diff --git a/src/app/valentina/dialogs/dialogstandardmeasurements.cpp b/src/app/valentina/dialogs/dialogstandardmeasurements.cpp
index b05277c3f..52843c1df 100644
--- a/src/app/valentina/dialogs/dialogstandardmeasurements.cpp
+++ b/src/app/valentina/dialogs/dialogstandardmeasurements.cpp
@@ -47,7 +47,7 @@ DialogStandardMeasurements::DialogStandardMeasurements(VContainer *data, const Q
 {
     ui->setupUi(this);
 
-    qApp->Settings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
+    qApp->ValentinaSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
 
     QRect position = this->frameGeometry();
     position.moveCenter(QDesktopWidget().availableGeometry().center());
@@ -157,7 +157,7 @@ void DialogStandardMeasurements::LoadStandardTables()
     qCDebug(vStMeasur, "Loading standard table.");
     QStringList filters{"*.vst"};
     //Use standard path to standard measurements
-    const QString path = qApp->Settings()->GetPathStandardMeasurements();
+    const QString path = qApp->ValentinaSettings()->GetPathStandardMeasurements();
     QDir tablesDir(path);
     tablesDir.setNameFilters(filters);
     tablesDir.setCurrent(path);
diff --git a/src/app/valentina/mainwindow.cpp b/src/app/valentina/mainwindow.cpp
index 39efcaacc..813abb419 100644
--- a/src/app/valentina/mainwindow.cpp
+++ b/src/app/valentina/mainwindow.cpp
@@ -1539,7 +1539,7 @@ bool MainWindow::SaveAs()
     QString dir;
     if (curFile.isEmpty())
     {
-        dir = qApp->Settings()->GetPathPattern() + "/" + tr("pattern") + ".val";
+        dir = qApp->ValentinaSettings()->GetPathPattern() + "/" + tr("pattern") + ".val";
     }
     else
     {
@@ -1572,9 +1572,9 @@ bool MainWindow::SaveAs()
     if (oldFileName != curFile)
     {// Now we have new file name after save as.
      // But still have previous name in restore list. We should delete them.
-        QStringList restoreFiles = qApp->Settings()->GetRestoreFileList();
+        QStringList restoreFiles = qApp->ValentinaSettings()->GetRestoreFileList();
         restoreFiles.removeAll(oldFileName);
-        qApp->Settings()->SetRestoreFileList(restoreFiles);
+        qApp->ValentinaSettings()->SetRestoreFileList(restoreFiles);
     }
     return result;
 }
@@ -1623,7 +1623,7 @@ void MainWindow::Open()
     qCDebug(vMainWindow, "Openning new file.");
     const QString filter(tr("Pattern files (*.val)"));
     //Get list last open files
-    const QStringList files = qApp->Settings()->GetRecentFileList();
+    const QStringList files = qApp->ValentinaSettings()->GetRecentFileList();
     QString dir;
     if (files.isEmpty())
     {
@@ -1735,9 +1735,9 @@ void MainWindow::FileClosedCorrect()
     WriteSettings();
 
     //File was closed correct.
-    QStringList restoreFiles = qApp->Settings()->GetRestoreFileList();
+    QStringList restoreFiles = qApp->ValentinaSettings()->GetRestoreFileList();
     restoreFiles.removeAll(curFile);
-    qApp->Settings()->SetRestoreFileList(restoreFiles);
+    qApp->ValentinaSettings()->SetRestoreFileList(restoreFiles);
 
     // Remove autosave file
     QFile autofile(curFile +".autosave");
@@ -2359,7 +2359,7 @@ void MainWindow::setCurrentFile(const QString &fileName)
     else
     {
         qCDebug(vMainWindow, "Updating recent file list.");
-        QStringList files = qApp->Settings()->GetRecentFileList();
+        QStringList files = qApp->ValentinaSettings()->GetRecentFileList();
         files.removeAll(fileName);
         files.prepend(fileName);
         while (files.size() > MaxRecentFiles)
@@ -2367,14 +2367,14 @@ void MainWindow::setCurrentFile(const QString &fileName)
             files.removeLast();
         }
 
-        qApp->Settings()->SetRecentFileList(files);
+        qApp->ValentinaSettings()->SetRecentFileList(files);
         UpdateRecentFileActions();
 
         qCDebug(vMainWindow, "Updating restore file list.");
-        QStringList restoreFiles = qApp->Settings()->GetRestoreFileList();
+        QStringList restoreFiles = qApp->ValentinaSettings()->GetRestoreFileList();
         restoreFiles.removeAll(fileName);
         restoreFiles.prepend(fileName);
-        qApp->Settings()->SetRestoreFileList(restoreFiles);
+        qApp->ValentinaSettings()->SetRestoreFileList(restoreFiles);
     }
     shownName+="[*]";
     setWindowTitle(shownName);
@@ -2398,17 +2398,17 @@ QString MainWindow::strippedName(const QString &fullFileName)
 void MainWindow::ReadSettings()
 {
     qCDebug(vMainWindow, "Reading settings.");
-    restoreGeometry(qApp->Settings()->GetGeometry());
-    restoreState(qApp->Settings()->GetWindowState());
-    restoreState(qApp->Settings()->GetToolbarsState(), APP_VERSION);
+    restoreGeometry(qApp->ValentinaSettings()->GetGeometry());
+    restoreState(qApp->ValentinaSettings()->GetWindowState());
+    restoreState(qApp->ValentinaSettings()->GetToolbarsState(), APP_VERSION);
 
     // Scene antialiasing
-    const bool graphOutputValue = qApp->Settings()->GetGraphicalOutput();
+    const bool graphOutputValue = qApp->ValentinaSettings()->GetGraphicalOutput();
     ui->view->setRenderHint(QPainter::Antialiasing, graphOutputValue);
     ui->view->setRenderHint(QPainter::SmoothPixmapTransform, graphOutputValue);
 
     // Stack limit
-    qApp->getUndoStack()->setUndoLimit(qApp->Settings()->GetUndoCount());
+    qApp->getUndoStack()->setUndoLimit(qApp->ValentinaSettings()->GetUndoCount());
 
     // Text under tool buton icon
     ToolBarStyles();
@@ -2422,9 +2422,9 @@ void MainWindow::WriteSettings()
 {
     ActionDraw(true);
 
-    qApp->Settings()->SetGeometry(saveGeometry());
-    qApp->Settings()->SetWindowState(saveState());
-    qApp->Settings()->SetToolbarsState(saveState(APP_VERSION));
+    qApp->ValentinaSettings()->SetGeometry(saveGeometry());
+    qApp->ValentinaSettings()->SetWindowState(saveState());
+    qApp->ValentinaSettings()->SetToolbarsState(saveState(APP_VERSION));
 }
 
 //---------------------------------------------------------------------------------------------------------------------
@@ -2456,7 +2456,7 @@ bool MainWindow::MaybeSave()
 void MainWindow::UpdateRecentFileActions()
 {
     qCDebug(vMainWindow, "Updating recent file actions.");
-    const QStringList files = qApp->Settings()->GetRecentFileList();
+    const QStringList files = qApp->ValentinaSettings()->GetRecentFileList();
     const int numRecentFiles = qMin(files.size(), static_cast<int>(MaxRecentFiles));
 
     for (int i = 0; i < numRecentFiles; ++i)
@@ -2739,9 +2739,9 @@ void MainWindow::InitAutoSave()
     connect(autoSaveTimer, &QTimer::timeout, this, &MainWindow::AutoSavePattern);
     autoSaveTimer->stop();
 
-    if (qApp->Settings()->GetAutosaveState())
+    if (qApp->ValentinaSettings()->GetAutosaveState())
     {
-        const qint32 autoTime = qApp->Settings()->GetAutosaveTime();
+        const qint32 autoTime = qApp->ValentinaSettings()->GetAutosaveTime();
         autoSaveTimer->start(autoTime*60000);
         qCDebug(vMainWindow, "Autosaving each %d minutes.", autoTime);
     }
@@ -2925,7 +2925,7 @@ QStringList MainWindow::GetUnlokedRestoreFileList() const
 #if QT_VERSION >= QT_VERSION_CHECK(5, 1, 0)
     QStringList restoreFiles;
     //Take all files that need to be restored
-    QStringList files = qApp->Settings()->GetRestoreFileList();
+    QStringList files = qApp->ValentinaSettings()->GetRestoreFileList();
     if (files.size() > 0)
     {
         for (int i = 0; i < files.size(); ++i)
@@ -2947,7 +2947,7 @@ QStringList MainWindow::GetUnlokedRestoreFileList() const
             files.removeAll(restoreFiles.at(i));
         }
 
-        qApp->Settings()->SetRestoreFileList(files);
+        qApp->ValentinaSettings()->SetRestoreFileList(files);
 
     }
     return restoreFiles;
@@ -2959,7 +2959,7 @@ QStringList MainWindow::GetUnlokedRestoreFileList() const
 //---------------------------------------------------------------------------------------------------------------------
 void MainWindow::WindowsLocale()
 {
-    qApp->Settings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
+    qApp->ValentinaSettings()->GetOsSeparator() ? setLocale(QLocale::system()) : setLocale(QLocale(QLocale::C));
 }
 
 //---------------------------------------------------------------------------------------------------------------------
@@ -2993,7 +2993,7 @@ void MainWindow::ShowPaper(int index)
 //---------------------------------------------------------------------------------------------------------------------
 void MainWindow::ToolBarStyle(QToolBar *bar)
 {
-    if (qApp->Settings()->GetToolBarStyle())
+    if (qApp->ValentinaSettings()->GetToolBarStyle())
     {
         bar->setToolButtonStyle(Qt::ToolButtonTextUnderIcon);
     }
@@ -3077,14 +3077,14 @@ QString MainWindow::CheckPathToMeasurements(const QString &path, const Measureme
             {
                 filter = tr("Standard measurements (*.vst)");
                 //Use standard path to standard measurements
-                const QString path = qApp->Settings()->GetPathStandardMeasurements();
+                const QString path = qApp->ValentinaSettings()->GetPathStandardMeasurements();
                 mPath = QFileDialog::getOpenFileName(this, tr("Open file"), path, filter);
             }
             else
             {
                 filter = tr("Individual measurements (*.vit)");
                 //Use standard path to individual measurements
-                const QString path = qApp->Settings()->GetPathIndividualMeasurements();
+                const QString path = qApp->ValentinaSettings()->GetPathIndividualMeasurements();
                 mPath = QFileDialog::getOpenFileName(this, tr("Open file"), path, filter);
             }
 
diff --git a/src/app/valentina/mainwindowsnogui.cpp b/src/app/valentina/mainwindowsnogui.cpp
index 50f9d2b4f..cce85da80 100644
--- a/src/app/valentina/mainwindowsnogui.cpp
+++ b/src/app/valentina/mainwindowsnogui.cpp
@@ -153,7 +153,7 @@ void MainWindowsNoGUI::ExportLayoutAs()
     suf.replace(".", "");
 
     const QString path = dialog.Path();
-    qApp->Settings()->SetPathLayout(path);
+    qApp->ValentinaSettings()->SetPathLayout(path);
     const QString mask = dialog.FileName();
 
     for (int i=0; i < scenes.size(); ++i)
@@ -718,7 +718,7 @@ void MainWindowsNoGUI::SaveLayoutAs()
     printer.setOutputFormat(QPrinter::PdfFormat);
 
     QString fileName = QFileDialog::getSaveFileName(this, tr("Print to pdf"),
-                                                    qApp->Settings()->GetPathLayout()+"/"+FileName()+".pdf",
+                                                    qApp->ValentinaSettings()->GetPathLayout()+"/"+FileName()+".pdf",
                                                     tr("PDF file (*.pdf)"));
     if (not fileName.isEmpty())
     {
@@ -727,7 +727,7 @@ void MainWindowsNoGUI::SaveLayoutAs()
         {
             fileName.append(".pdf");
         }
-        qApp->Settings()->SetPathLayout(f.absolutePath());
+        qApp->ValentinaSettings()->SetPathLayout(f.absolutePath());
 
         printer.setOutputFileName(fileName);
         printer.setResolution(static_cast<int>(PrintDPI));
diff --git a/src/app/valentina/xml/vpattern.cpp b/src/app/valentina/xml/vpattern.cpp
index 12a5b282c..a4a375e82 100644
--- a/src/app/valentina/xml/vpattern.cpp
+++ b/src/app/valentina/xml/vpattern.cpp
@@ -812,7 +812,7 @@ QString VPattern::GetLabelBase(unsigned int index) const
 {
     QStringList list = VApplication::LabelLanguages();
     QStringList alphabet;
-    switch (list.indexOf(qApp->Settings()->GetLabelLanguage()))
+    switch (list.indexOf(qApp->ValentinaSettings()->GetLabelLanguage()))
     {
         case 0: // de
         {
@@ -2175,7 +2175,7 @@ void VPattern::ParseIncrementsElement(const QDomNode &node)
 //---------------------------------------------------------------------------------------------------------------------
 QString VPattern::GetAuthor() const
 {
-    return UniqueTagText(TagAuthor, qApp->Settings()->GetUser());
+    return UniqueTagText(TagAuthor, qApp->ValentinaSettings()->GetUser());
 }
 
 //---------------------------------------------------------------------------------------------------------------------
diff --git a/src/libs/vmisc/vabstractapplication.cpp b/src/libs/vmisc/vabstractapplication.cpp
index b8abd6240..d687acd66 100644
--- a/src/libs/vmisc/vabstractapplication.cpp
+++ b/src/libs/vmisc/vabstractapplication.cpp
@@ -65,30 +65,17 @@ void VAbstractApplication::setPatternUnit(const Unit &patternUnit)
     _patternUnit = patternUnit;
 }
 
-//---------------------------------------------------------------------------------------------------------------------
-/**
- * @brief OpenSettings get acsses to application settings.
- *
- * Because we can create object in constructor we open file separately.
- */
-void VAbstractApplication::OpenSettings()
-{
-    settings = new VSettings(QSettings::IniFormat, QSettings::UserScope, QApplication::organizationName(),
-                             QApplication::applicationName(), this);
-}
-
 //---------------------------------------------------------------------------------------------------------------------
 /**
  * @brief getSettings hide settings constructor.
  * @return pointer to class for acssesing to settings in ini file.
  */
-VSettings *VAbstractApplication::Settings()
+VCommonSettings *VAbstractApplication::Settings()
 {
     SCASSERT(settings != nullptr);
     return settings;
 }
 
-
 //---------------------------------------------------------------------------------------------------------------------
 QGraphicsScene *VAbstractApplication::getCurrentScene() const
 {
diff --git a/src/libs/vmisc/vabstractapplication.h b/src/libs/vmisc/vabstractapplication.h
index 556f4c80e..390df64c3 100644
--- a/src/libs/vmisc/vabstractapplication.h
+++ b/src/libs/vmisc/vabstractapplication.h
@@ -60,8 +60,8 @@ public:
     MeasurementsType patternType() const;
     void             setPatternType(const MeasurementsType &patternType);
 
-    void             OpenSettings();
-    VSettings       *Settings();
+    virtual void     OpenSettings()=0;
+    VCommonSettings *Settings();
 
     template <typename T>
     QString          LocaleToString(const T &value);
@@ -98,7 +98,7 @@ protected:
     /**
      * @brief settings pointer to settings. Help hide constructor creation settings. Make make code more readable.
      */
-    VSettings          *settings;
+    VCommonSettings    *settings;
 
 private:
     Q_DISABLE_COPY(VAbstractApplication)
diff --git a/src/libs/vpatterndb/calculator.cpp b/src/libs/vpatterndb/calculator.cpp
index c33540198..db3683721 100644
--- a/src/libs/vpatterndb/calculator.cpp
+++ b/src/libs/vpatterndb/calculator.cpp
@@ -225,8 +225,8 @@ void Calculator::InitCharacterSets()
                                         << "ЭųįҶرҲеԷňعθҺнԿفπÂхՇψÊэšՏÒUəÚѝŻşҤӑâeէŐımկòuշÕúտŔ";
 
     // Defining identifier character sets
-    DefineNameChars(QStringLiteral("0123456789_") + symbols.join(""));
-    DefineOprtChars(symbols.join("") + QStringLiteral("+-*^/?<>=#!$%&|~_"));
+    DefineNameChars(QStringLiteral("0123456789_@#") + symbols.join(""));
+    DefineOprtChars(symbols.join("") + QStringLiteral("+-*^/?<>=!$%&|~_"));
 }
 
 //---------------------------------------------------------------------------------------------------------------------
diff --git a/src/libs/vtools/dialogs/support/dialogeditwrongformula.ui b/src/libs/vtools/dialogs/support/dialogeditwrongformula.ui
index 254234eec..ade596dec 100644
--- a/src/libs/vtools/dialogs/support/dialogeditwrongformula.ui
+++ b/src/libs/vtools/dialogs/support/dialogeditwrongformula.ui
@@ -3,7 +3,7 @@
  <class>DialogEditWrongFormula</class>
  <widget class="QDialog" name="DialogEditWrongFormula">
   <property name="windowModality">
-   <enum>Qt::ApplicationModal</enum>
+   <enum>Qt::WindowModal</enum>
   </property>
   <property name="geometry">
    <rect>