diff --git a/src/musrgui/PAdmin.cpp b/src/musrgui/PAdmin.cpp
index 46305472..d6b2bb3e 100644
--- a/src/musrgui/PAdmin.cpp
+++ b/src/musrgui/PAdmin.cpp
@@ -78,8 +78,12 @@ bool PAdminXMLParser::startElement( const QString&, const QString&,
     fKeyWord = eInstitute;
   } else if (qName == "file_format") {
     fKeyWord = eFileFormat;
+  } else if (qName == "lifetime_correction") {
+    fKeyWord = eLifetimeCorrection;
   } else if (qName == "msr_default_file_path") {
     fKeyWord = eMsrDefaultFilePath;
+  } else if (qName == "help_main") {
+    fKeyWord = eHelpMain;
   }
 
   return true;
@@ -120,9 +124,19 @@ bool PAdminXMLParser::characters(const QString& str)
     case eFileFormat:
       fAdmin->setFileFormat(QString(str.ascii()).stripWhiteSpace());
       break;
+    case eLifetimeCorrection:
+      bool flag;
+      if (str == "y")
+        flag = true;
+      else
+        flag = false;
+      fAdmin->setLifetimeCorrectionFlag(flag);
     case eMsrDefaultFilePath:
       fAdmin->setMsrDefaultFilePath(QString(str.ascii()).stripWhiteSpace());
       break;
+    case eHelpMain:
+      fAdmin->setHelpMain(str);
+      break;
     default:
       break;
   }
diff --git a/src/musrgui/PAdmin.h b/src/musrgui/PAdmin.h
index 71c67190..fd9a262c 100644
--- a/src/musrgui/PAdmin.h
+++ b/src/musrgui/PAdmin.h
@@ -47,7 +47,8 @@ class PAdminXMLParser : public QXmlDefaultHandler
 
   private:
     enum EAdminKeyWords {eEmpty, eExecPath, eDefaultSavePath, eBeamline, eInstitute, eFileFormat,
-                         eMsrDefaultFilePath};
+                         eLifetimeCorrection, eMsrDefaultFilePath,
+                         eHelpMain};
 
     bool startDocument();
     bool startElement( const QString&, const QString&, const QString& ,
@@ -73,7 +74,9 @@ class PAdmin
     QString getBeamline() { return fBeamline; }
     QString getInstitute() { return fInstitute; }
     QString getFileFormat() { return fFileFormat; }
+    bool    getLifetimeCorrectionFlag() { return fLifetimeCorrection; }
     QString getMsrDefaultFilePath() { return fMsrDefaultFilePath; }
+    QString getHelpMain() { return fHelpMain; }
 
   protected:
     void setExecPath(const QString str) { fExecPath = str; }
@@ -81,7 +84,9 @@ class PAdmin
     void setBeamline(const QString str) { fBeamline = str; }
     void setInstitute(const QString str) { fInstitute = str; }
     void setFileFormat(const QString str) { fFileFormat = str; }
+    void setLifetimeCorrectionFlag(const bool flag) { fLifetimeCorrection = flag; }
     void setMsrDefaultFilePath(const QString str) { fMsrDefaultFilePath = str; }
+    void setHelpMain(const QString str) { fHelpMain = str; }
 
   private:
     friend class PAdminXMLParser;
@@ -92,8 +97,11 @@ class PAdmin
     QString fBeamline;
     QString fInstitute;
     QString fFileFormat;
+    bool fLifetimeCorrection;
 
     QString fMsrDefaultFilePath;
+
+    QString fHelpMain;
 };
 
 #endif // _PADMIN_H_
diff --git a/src/musrgui/PGetAsymmetryRunBlockDialog.cpp b/src/musrgui/PGetAsymmetryRunBlockDialog.cpp
index a26255a3..5c757a28 100644
--- a/src/musrgui/PGetAsymmetryRunBlockDialog.cpp
+++ b/src/musrgui/PGetAsymmetryRunBlockDialog.cpp
@@ -68,14 +68,14 @@ PGetAsymmetryRunBlockDialog::PGetAsymmetryRunBlockDialog()
  */
 QString PGetAsymmetryRunBlockDialog::GetRunHeaderInfo()
 {
-    QString str;
+  QString str;
 
-    str  = "RUN " + fRunFileName_lineEdit->text() + " ";
-    str += fBeamline_lineEdit->text().upper() + " ";
-    str += fInstitute_comboBox->currentText() + " ";
-    str += fFileFormat_comboBox->currentText() + "   (name beamline institute data-file-format)\n";
+  str  = "RUN " + fRunFileName_lineEdit->text() + " ";
+  str += fBeamline_lineEdit->text().upper() + " ";
+  str += fInstitute_comboBox->currentText() + " ";
+  str += fFileFormat_comboBox->currentText() + "   (name beamline institute data-file-format)\n";
 
-    return str;
+  return str;
 }
 
 //----------------------------------------------------------------------------------------------------
diff --git a/src/musrgui/PGetSingleHistoRunBlockDialog.cpp b/src/musrgui/PGetSingleHistoRunBlockDialog.cpp
index 98c2f5e8..b4d6b0e6 100644
--- a/src/musrgui/PGetSingleHistoRunBlockDialog.cpp
+++ b/src/musrgui/PGetSingleHistoRunBlockDialog.cpp
@@ -40,29 +40,25 @@
 /**
  * <p>
  */
-PGetSingleHistoRunBlockDialog::PGetSingleHistoRunBlockDialog()
+PGetSingleHistoRunBlockDialog::PGetSingleHistoRunBlockDialog(QWidget * parent, const char *name,
+                                                             bool modal, WFlags f,
+                                                             const bool lifetimeCorrection) :
+   PGetSingleHistoRunBlockDialogBase(parent, name, modal, f)
 {
   fForward_lineEdit->setValidator( new QIntValidator(fForward_lineEdit) );
   fNorm_lineEdit->setValidator( new QIntValidator(fNorm_lineEdit) );
-/*
-  fDataForwardStart_lineEdit->setValidator( new QIntValidator(fDataForwardStart_lineEdit) );
-  fDataForwardEnd_lineEdit->setValidator( new QIntValidator(fDataForwardEnd_lineEdit) );
-  fDataBackwardStart_lineEdit->setValidator( new QIntValidator(fDataBackwardStart_lineEdit) );
-  fDataBackwardEnd_lineEdit->setValidator( new QIntValidator(fDataBackwardEnd_lineEdit) );
-  fBackgroundForwardStart_lineEdit->setValidator( new QIntValidator(fBackgroundForwardStart_lineEdit) );
-  fBackgroundForwardEnd_lineEdit->setValidator( new QIntValidator(fBackgroundForwardEnd_lineEdit) );
-  fBackgroundBackwardStart_lineEdit->setValidator( new QIntValidator(fBackgroundBackwardStart_lineEdit) );
-  fBackgroundBackwardEnd_lineEdit->setValidator( new QIntValidator(fBackgroundBackwardEnd_lineEdit) );
-  fBackgroundForwardFix_lineEdit->setValidator( new QDoubleValidator(fBackgroundForwardFix_lineEdit) );
-  fBackgroundBackwardFix_lineEdit->setValidator( new QDoubleValidator(fBackgroundBackwardFix_lineEdit) );
+  fDataStart_lineEdit->setValidator( new QIntValidator(fDataStart_lineEdit) );
+  fDataEnd_lineEdit->setValidator( new QIntValidator(fDataEnd_lineEdit) );
+  fBackgroundFix_lineEdit->setValidator( new QDoubleValidator(fBackgroundFix_lineEdit) );
+  fBackgroundFit_lineEdit->setValidator( new QIntValidator(fBackgroundFit_lineEdit) );
+  fBackgroundStart_lineEdit->setValidator( new QIntValidator(fBackgroundStart_lineEdit) );
+  fBackgroundEnd_lineEdit->setValidator( new QIntValidator(fBackgroundEnd_lineEdit) );
   fFitRangeStart_lineEdit->setValidator( new QDoubleValidator(fFitRangeStart_lineEdit) );
   fFitRangeEnd_lineEdit->setValidator( new QDoubleValidator(fFitRangeEnd_lineEdit) );
   fPacking_lineEdit->setValidator( new QIntValidator(fPacking_lineEdit) );
-  fAlpha_lineEdit->setValidator( new QIntValidator(fAlpha_lineEdit) );
-  fBeta_lineEdit->setValidator( new QIntValidator(fBeta_lineEdit) );
-  fT0Forward_lineEdit->setValidator( new QIntValidator(fT0Forward_lineEdit) );
-  fT0Backward_lineEdit->setValidator( new QIntValidator(fT0Backward_lineEdit) );
-*/
+  fT0_lineEdit->setValidator( new QIntValidator(fT0_lineEdit) );
+  fLifetime_lineEdit->setValidator( new QIntValidator(fLifetime_lineEdit) );
+  fLifetimeCorrection_checkBox->setChecked(lifetimeCorrection);
 }
 
 //----------------------------------------------------------------------------------------------------
@@ -73,6 +69,11 @@ QString PGetSingleHistoRunBlockDialog::GetRunHeaderInfo()
 {
   QString str="";
 
+  str  = "RUN " + fRunFileName_lineEdit->text() + " ";
+  str += fBeamline_lineEdit->text().upper() + " ";
+  str += fInstitute_comboBox->currentText() + " ";
+  str += fFileFormat_comboBox->currentText() + "   (name beamline institute data-file-format)\n";
+
   return str;
 }
 
@@ -82,7 +83,17 @@ QString PGetSingleHistoRunBlockDialog::GetRunHeaderInfo()
  */
 QString PGetSingleHistoRunBlockDialog::GetMap(bool &valid)
 {
-  QString str="";
+  QString str = fMap_lineEdit->text().stripWhiteSpace().remove(" ");
+
+  // check if potentially proper map line
+  for (unsigned int i=0; i<str.length(); i++) {
+    if (!str[i].isDigit()) {
+      valid = false;
+      break;
+    }
+  }
+
+  str = "map             " + fMap_lineEdit->text() + "\n";
 
   return str;
 }
@@ -95,6 +106,15 @@ QString PGetSingleHistoRunBlockDialog::GetData(bool &valid)
 {
   QString str="";
 
+  if (fDataStart_lineEdit->text().isEmpty() || fDataEnd_lineEdit->text().isEmpty()) {
+    valid = false;
+  } else {
+    str  = "data            ";
+    str += fDataStart_lineEdit->text() + "   ";
+    str += fDataEnd_lineEdit->text() + "\n";
+    valid = true;
+  }
+
   return str;
 }
 
@@ -106,6 +126,30 @@ QString PGetSingleHistoRunBlockDialog::GetBackground(bool &valid)
 {
   QString str="";
 
+  valid = true;
+
+  // check that either backgr.fix or background is given, but not both
+  if (fBackgroundStart_lineEdit->text().isEmpty() && fBackgroundEnd_lineEdit->text().isEmpty() &&
+      fBackgroundFix_lineEdit->text().isEmpty() &&
+      fBackgroundFit_lineEdit->text().isEmpty()) {
+    valid = false;
+    str = "background      0  10\n";
+  } else {
+    if (!fBackgroundStart_lineEdit->text().isEmpty()) { // assume the rest is given, not fool prove but ...
+      str  = "background      ";
+      str += fBackgroundStart_lineEdit->text() + "   ";
+      str += fBackgroundEnd_lineEdit->text() + "\n";
+    }
+    if (!fBackgroundFix_lineEdit->text().isEmpty()) {
+      str  = "backgr.fix      ";
+      str += fBackgroundFix_lineEdit->text() + "\n";
+    }
+    if (!fBackgroundFit_lineEdit->text().isEmpty()) {
+      str  = "backgr.fit      ";
+      str += fBackgroundFit_lineEdit->text() + "\n";
+    }
+  }
+
   return str;
 }
 
@@ -117,6 +161,16 @@ QString PGetSingleHistoRunBlockDialog::GetFitRange(bool &valid)
 {
   QString str="";
 
+  if (fFitRangeStart_lineEdit->text().isEmpty() || fFitRangeEnd_lineEdit->text().isEmpty()) {
+    str += "fit             0.0   10.0\n";
+    valid = false;
+  } else {
+    str += "fit             ";
+    str += fFitRangeStart_lineEdit->text() + "   ";
+    str += fFitRangeEnd_lineEdit->text() + "\n";
+    valid = true;
+  }
+
   return str;
 }
 
@@ -128,6 +182,14 @@ QString PGetSingleHistoRunBlockDialog::GetPacking(bool &present)
 {
   QString str="";
 
+  if (fPacking_lineEdit->text().isEmpty()) {
+    present = false;
+    str += "packing         1\n";
+  } else {
+    present = true;
+    str += "packing         " + fPacking_lineEdit->text() + "\n\n";
+  }
+
   return str;
 }
 
@@ -139,6 +201,14 @@ QString PGetSingleHistoRunBlockDialog::GetT0(bool &present)
 {
   QString str="";
 
+  if (!fT0_lineEdit->text().isEmpty()) {
+    str  = "t0              ";
+    str += fT0_lineEdit->text() + "\n";
+    present = true;
+  } else {
+    present = false;
+  }
+
   return str;
 }
 
@@ -150,6 +220,14 @@ QString PGetSingleHistoRunBlockDialog::GetMuonLifetimeParam(bool &present)
 {
   QString str="";
 
+  if (!fLifetime_lineEdit->text().isEmpty()) {
+    str  = "lifetime        ";
+    str += fLifetime_lineEdit->text() + "\n";
+    present = true;
+  } else {
+    present = false;
+  }
+
   return str;
 }
 
@@ -161,6 +239,13 @@ QString PGetSingleHistoRunBlockDialog::GetLifetimeCorrection(bool &present)
 {
   QString str="";
 
+  if (fLifetimeCorrection_checkBox->isChecked()) {
+    str = "lifetimecorrection\n";
+    present = true;
+  } else {
+    present = false;
+  }
+
   return str;
 }
 
diff --git a/src/musrgui/PGetSingleHistoRunBlockDialog.h b/src/musrgui/PGetSingleHistoRunBlockDialog.h
index 0772ad46..841d53be 100644
--- a/src/musrgui/PGetSingleHistoRunBlockDialog.h
+++ b/src/musrgui/PGetSingleHistoRunBlockDialog.h
@@ -40,7 +40,8 @@
 class PGetSingleHistoRunBlockDialog : public PGetSingleHistoRunBlockDialogBase
 {
   public:
-    PGetSingleHistoRunBlockDialog();
+    PGetSingleHistoRunBlockDialog(QWidget * parent = 0, const char * name = 0, bool modal = FALSE,
+                                  WFlags f = 0, const bool lifetimeCorrection = true);
 
     QString GetRunHeaderInfo();
     QString GetMap(bool &valid);
diff --git a/src/musrgui/PSubTextEdit.cpp b/src/musrgui/PSubTextEdit.cpp
index 50e95175..c737a721 100644
--- a/src/musrgui/PSubTextEdit.cpp
+++ b/src/musrgui/PSubTextEdit.cpp
@@ -40,6 +40,7 @@
 #include "forms/PGetTitleDialog.h"
 #include "PGetParameterDialog.h"
 #include "PGetAsymmetryRunBlockDialog.h"
+#include "PGetSingleHistoRunBlockDialog.h"
 #include "PGetFourierDialog.h"
 #include "PGetPlotDialog.h"
 
@@ -47,7 +48,8 @@
 /**
  * <p>
  */
-PSubTextEdit::PSubTextEdit(QWidget *parent, const char *name) : QTextEdit(parent, name)
+PSubTextEdit::PSubTextEdit(QWidget *parent, const char *name, const bool lifetimeCorrectionFlag) :
+    QTextEdit(parent, name), fLifetimeCorrectionFlag(lifetimeCorrectionFlag)
 {
 }
 
@@ -177,7 +179,7 @@ void PSubTextEdit::insertAsymRunBlock()
       str += workStr;
     }
 
-    // add alpha if present
+    // add beta if present
     workStr = dlg->GetBetaParameter(present);
     if (present) {
       str += workStr;
@@ -205,7 +207,7 @@ void PSubTextEdit::insertAsymRunBlock()
     str += workStr;
     if (!valid) {
       QMessageBox::critical(this, "**ERROR**",
-         "Either Background or Background.Fix is needed!\nWill set Background to 0..10, please correct!",
+         "Either <b>background</b> or <b>backgr.fix</b> is needed!\nWill set <b>background</b> to 0..10, please correct!",
          QMessageBox::Ok, QMessageBox::NoButton);
     }
 
@@ -258,6 +260,98 @@ void PSubTextEdit::insertAsymRunBlock()
  */
 void PSubTextEdit::insertSingleHistRunBlock()
 {
+  PGetSingleHistoRunBlockDialog *dlg = new PGetSingleHistoRunBlockDialog();
+  if (dlg->exec() == QDialog::Accepted) {
+    QString str, workStr;
+    bool valid = true, present = true;
+    // check if there is already a run block present, necessary because of the '####' line
+    // STILL MISSING
+
+    // add run line
+    str += dlg->GetRunHeaderInfo();
+
+    // add fittype
+    str += "fittype         0         (single histogram fit)\n";
+
+    // add map
+    workStr = dlg->GetMap(valid);
+    if (valid) {
+      str += workStr;
+    } else {
+      QMessageBox::critical(this, "**ERROR**",
+         "Given map not valid, will add a default map line",
+         QMessageBox::Ok, QMessageBox::NoButton);
+      str += "map             0  0  0  0  0  0  0  0  0  0\n";
+    }
+
+    // add forward
+    str += dlg->GetForward();
+
+    // add norm
+    str += dlg->GetNorm();
+
+    // add lifetime parameter
+    workStr = dlg->GetMuonLifetimeParam(present);
+    if (present) {
+      str += workStr;
+    }
+
+    // add lifetime correction flag if present
+    workStr = dlg->GetLifetimeCorrection(present);
+    if (present) {
+      str += workStr;
+    }
+
+    // add background, backgr.fix or backgr.fit
+    workStr = dlg->GetBackground(valid);
+    str += workStr;
+    if (!valid) {
+      QMessageBox::critical(this, "**ERROR**",
+         "Either <b>background</b>, <b>backgr.fix</b>, or <b>backgr.fit</b> is needed!\nWill set <b>background</b> to 0..10, please correct!",
+         QMessageBox::Ok, QMessageBox::NoButton);
+    }
+
+    // add t0 if present
+    workStr = dlg->GetT0(present);
+    if (present) {
+      str += workStr;
+    } else {
+      QMessageBox::warning(this, "**ERROR**",
+         "T0's not given, assume that they are present in the data file!",
+         QMessageBox::Ok, QMessageBox::NoButton);
+    }
+
+    // add data
+    workStr = dlg->GetData(valid);
+    if (valid) {
+      str += workStr;
+    } else {
+      QMessageBox::critical(this, "**ERROR**",
+         "Not all Data entries are present.Fix is needed!\nWill not set anything!",
+         QMessageBox::Ok, QMessageBox::NoButton);
+    }
+
+    // add fit range
+    workStr = dlg->GetFitRange(valid);
+    str += workStr;
+    if (!valid) {
+      QMessageBox::critical(this, "**ERROR**",
+         "No valid fit range is given.Fix is needed!\nWill add a default one!",
+         QMessageBox::Ok, QMessageBox::NoButton);
+    }
+
+    // add packing
+    workStr = dlg->GetPacking(present);
+    str += workStr;
+    if (!present) {
+      QMessageBox::critical(this, "**ERROR**",
+         "No valid packing/binning is given.Fix is needed!\nWill add a default one!",
+         QMessageBox::Ok, QMessageBox::NoButton);
+    }
+
+    // insert Asymmetry Run Block at the current cursor position
+    insert(str);
+  }
 }
 
 //----------------------------------------------------------------------------------------------------
diff --git a/src/musrgui/PSubTextEdit.h b/src/musrgui/PSubTextEdit.h
index 00214ba7..5a9e89d4 100644
--- a/src/musrgui/PSubTextEdit.h
+++ b/src/musrgui/PSubTextEdit.h
@@ -38,24 +38,28 @@ class PSubTextEdit : public QTextEdit
 {
     Q_OBJECT
 
-public:
-  PSubTextEdit( QWidget *parent = 0, const char *name = 0 );
+  public:
+    PSubTextEdit( QWidget *parent = 0, const char *name = 0 , const bool lifetimeCorrectionFlag = true);
 
-protected:
-  virtual QPopupMenu *createPopupMenu( const QPoint &pos);
+  protected:
+    virtual QPopupMenu *createPopupMenu( const QPoint &pos);
+
+  private slots:
+    void insertTitle();
+    void insertParameterBlock();
+    void insertTheoryBlock();
+    void insertFunctionBlock();
+    void insertAsymRunBlock();
+    void insertSingleHistRunBlock();
+    void insertNonMusrRunBlock();
+    void insertCommandBlock();
+    void insertFourierBlock();
+    void insertPlotBlock();
+    void insertStatisticBlock();
+
+  private:
+    bool fLifetimeCorrectionFlag;
 
-private slots:
-  void insertTitle();
-  void insertParameterBlock();
-  void insertTheoryBlock();
-  void insertFunctionBlock();
-  void insertAsymRunBlock();
-  void insertSingleHistRunBlock();
-  void insertNonMusrRunBlock();
-  void insertCommandBlock();
-  void insertFourierBlock();
-  void insertPlotBlock();
-  void insertStatisticBlock();
 };
 
 #endif // _PSUBTEXTEDIT_H_
diff --git a/src/musrgui/PTextEdit.cpp b/src/musrgui/PTextEdit.cpp
index d7a4f739..6132a4ef 100644
--- a/src/musrgui/PTextEdit.cpp
+++ b/src/musrgui/PTextEdit.cpp
@@ -329,7 +329,7 @@ void PTextEdit::load( const QString &f )
 {
   if ( !QFile::exists( f ) )
     return;
-  PSubTextEdit *edit = new PSubTextEdit( fTabWidget );
+  PSubTextEdit *edit = new PSubTextEdit( fTabWidget, "PSubTextEdit", fAdmin->getLifetimeCorrectionFlag() );
   edit->setTextFormat( PlainText );
   edit->setFamily("Courier");
   edit->setPointSize(11); // 11pt
@@ -410,7 +410,7 @@ bool PTextEdit::validRunList(const QString runList)
  */
 void PTextEdit::fileNew()
 {
-  PSubTextEdit *edit = new PSubTextEdit( fTabWidget );
+  PSubTextEdit *edit = new PSubTextEdit( fTabWidget, "PSubTextEdit", fAdmin->getLifetimeCorrectionFlag() );
   edit->setTextFormat( PlainText );
   edit->setFamily("Courier");
   edit->setPointSize(11); // 11pt
diff --git a/src/musrgui/musrgui_startup.xml b/src/musrgui/musrgui_startup.xml
index 1e438ed1..3df63081 100644
--- a/src/musrgui/musrgui_startup.xml
+++ b/src/musrgui/musrgui_startup.xml
@@ -13,6 +13,12 @@
     <beamline>mue4</beamline>
     <institute>psi</institute>
     <file_format>root-npp</file_format>
+    <lifetime_correction>y</lifetime_correction>
   </msr_file_defaults>
+  <help_section>
+    <help_main>
+      For a detailed description of the aim and structure of a msr-file see http://wiki.intranet.psi.ch.
+    </help_main>
+  </help_section>
 </musrgui_startup>