diff --git a/Documentation/UserManual/ProgrammingGuide.pdf b/Documentation/UserManual/ProgrammingGuide.pdf
index 9ed0646..6875fc2 100644
Binary files a/Documentation/UserManual/ProgrammingGuide.pdf and b/Documentation/UserManual/ProgrammingGuide.pdf differ
diff --git a/Documentation/UserManual/ProgrammingGuide.tex b/Documentation/UserManual/ProgrammingGuide.tex
index ecc0fcf..9ff63db 100644
--- a/Documentation/UserManual/ProgrammingGuide.tex
+++ b/Documentation/UserManual/ProgrammingGuide.tex
@@ -601,6 +601,9 @@ If no de-embedding is configured for the selected trace, enabling the de-embeddi
 \hspace{1cm}LOAD\\
 \hspace{1cm}THROUGH\\
 \hspace{1cm}ISOLATION\\
+\hspace{1cm}SLIDINGLOAD\\
+\hspace{1cm}REFLECT\\
+\hspace{1cm}LINE\\
 {[<standard>]}, calibration kit standard name, optional\\}
 
 \subsubsection{VNA:CALibration:TYPE}
@@ -609,7 +612,10 @@ If no de-embedding is configured for the selected trace, enabling the de-embeddi
 \hspace{1cm}SHORT\\
 \hspace{1cm}LOAD\\
 \hspace{1cm}THROUGH\\
-\hspace{1cm}ISOLATION\\}
+\hspace{1cm}ISOLATION\\
+\hspace{1cm}SLIDINGLOAD\\
+\hspace{1cm}REFLECT\\
+\hspace{1cm}LINE\\}
 
 \subsubsection{VNA:CALibration:PORT}
 \event{Sets the port for the specified measurement}{VNA:CALibration:PORT}{<measurement number> <port number>}
@@ -637,6 +643,23 @@ Important points when saving/loading calibration files through SCPI commands:
 \subsubsection{VNA:CALibration:LOAD}
 \query{Loads a calibration file}{VNA:CALibration:LOAD?}{<filename>}{TRUE or FALSE}
 
+\subsubsection{VNA:CALibration:KIT:MANufacturer}
+\event{Sets the manufacturer name of the calibration kit}{VNA:CALibration:KIT:MANufacturer}{<manufacturer>}
+\query{Returns the manufacturer name of the calibration kit}{VNA:CALibration:KIT:MANufacturer?}{None}{<manufacturer>}
+
+\subsubsection{VNA:CALibration:KIT:SERial}
+\event{Sets the serial number of the calibration kit}{VNA:CALibration:KIT:SERial}{<serial number>}
+\query{Returns the serial number of the calibration kit}{VNA:CALibration:KIT:SERial?}{None}{<serial number>}
+
+\subsubsection{VNA:CALibration:KIT:DESCription}
+\event{Sets the description of the calibration kit}{VNA:CALibration:KIT:DESCription}{<description>}
+\query{Returns the description of the calibration kit}{VNA:CALibration:KIT:DESCription?}{None}{<description>}
+
+\subsubsection{VNA:CALibration:KIT:FILEname}
+\query{Returns the filename of the calibration kit}{VNA:CALibration:KIT:FILEname?}{None}{<filename>}
+
+The filename is only available if the calibration kit was loaded from a dedicated file. If it was loaded as part of a calibration file or has not been loaded since the GUI started, no filename will be returned.
+
 \subsubsection{VNA:CALibration:KIT:SAVE}
 \event{Saves the active calibration kit to a file}{VNA:CALibration:KIT:SAVE}{<filename>}
 Important points when saving/loading calibration kit files through SCPI commands:
diff --git a/Software/PC_Application/LibreVNA-GUI/Calibration/calkit.cpp b/Software/PC_Application/LibreVNA-GUI/Calibration/calkit.cpp
index 52ae267..70fec89 100644
--- a/Software/PC_Application/LibreVNA-GUI/Calibration/calkit.cpp
+++ b/Software/PC_Application/LibreVNA-GUI/Calibration/calkit.cpp
@@ -19,10 +19,44 @@ Calkit::Calkit()
     : SCPINode("KIT")
 {
     // set default values
+    filename = "";
     for(auto e : descr) {
         e.var.setValue(e.def);
     }
 
+    add(new SCPICommand("MANufacturer", [=](QStringList params) -> QString {
+        if(params.size() != 1 ) {
+            // no new value given
+            return SCPI::getResultName(SCPI::Result::Error);
+        }
+        manufacturer = params[0];
+        return SCPI::getResultName(SCPI::Result::Empty);
+    }, [=](QStringList) -> QString {
+        return manufacturer;
+    }, false));
+    add(new SCPICommand("SERial", [=](QStringList params) -> QString {
+        if(params.size() != 1 ) {
+            // no new value given
+            return SCPI::getResultName(SCPI::Result::Error);
+        }
+        serialnumber = params[0];
+        return SCPI::getResultName(SCPI::Result::Empty);
+    }, [=](QStringList) -> QString {
+        return serialnumber;
+    }, false));
+    add(new SCPICommand("DESCription", [=](QStringList params) -> QString {
+        if(params.size() != 1 ) {
+            // no new value given
+            return SCPI::getResultName(SCPI::Result::Error);
+        }
+        description = params[0];
+        return SCPI::getResultName(SCPI::Result::Empty);
+    }, [=](QStringList) -> QString {
+        return description;
+    }, false));
+    add(new SCPICommand("FILEname", nullptr, [=](QStringList) -> QString {
+        return filename;
+    }));
     add(new SCPICommand("SAVE", [=](QStringList params) -> QString {
         if(params.size() != 1 ) {
             // no filename given or no calibration active
@@ -57,6 +91,7 @@ void Calkit::toFile(QString filename)
     file.open(filename.toStdString());
     file << setw(4) << toJSON() << endl;
     file.close();
+    this->filename = filename;
 }
 
 static QString readLine(ifstream &file) {
@@ -83,6 +118,7 @@ Calkit Calkit::fromFile(QString filename)
         throw runtime_error("JSON parsing error: " + string(e.what()));
     }
     c.clearStandards();
+    c.filename = "";
     if(j.contains("standards")) {
         qDebug() << "new JSON format detected";
         c.fromJSON(j);
@@ -345,6 +381,7 @@ Calkit Calkit::fromFile(QString filename)
     }
 
     file.close();
+    c.filename = filename;
 
     return c;
 }
@@ -411,6 +448,7 @@ nlohmann::json Calkit::toJSON()
 void Calkit::fromJSON(nlohmann::json j)
 {
     clearStandards();
+    filename = "";
     Savable::parseJSON(j, descr);
     for(auto js : j["standards"]) {
         if(!js.contains("type") || !js.contains("params")) {
diff --git a/Software/PC_Application/LibreVNA-GUI/Calibration/calkit.h b/Software/PC_Application/LibreVNA-GUI/Calibration/calkit.h
index 71ccdac..1999aee 100644
--- a/Software/PC_Application/LibreVNA-GUI/Calibration/calkit.h
+++ b/Software/PC_Application/LibreVNA-GUI/Calibration/calkit.h
@@ -26,6 +26,7 @@ public:
         this->serialnumber = other.serialnumber;
         this->description = other.description;
         this->standards = other.standards;
+        this->filename = other.filename;
         return *this;
     }
 
@@ -58,6 +59,7 @@ public:
 private:
     void clearStandards();
     QString manufacturer, serialnumber, description;
+    QString filename;
     std::vector<CalStandard::Virtual*> standards;
 
     const std::vector<Savable::SettingDescription> descr = {{