Thank you Dave. Yes I knew that shortcut, I wanted to know what the script command was for the extendscript.
I got this code from Walter Soyka
app.executeCommand(app.findMenuCommandId("Split Layer"));
Which basically does exactly what the Ctl-Shift-d Win does. I am looking into a script if I place multiple marker points, how to split the layers from those points.
Thank you once more.
/HRB