AlexeyNik

    if ( app.documents.length > 0 ) {   
        if ( app.scriptPreferences.version >= 6 ) {  
            app.doScript( main, ScriptLanguage.JAVASCRIPT , [], UndoModes.ENTIRE_SCRIPT, "Search in masterpages" );           
        }   
        else {  
            main();  
        }  
    } else {  
        alert ( "No documents open!" );  
    }  

AlexeyNik

GREP

AlexeyNik

    // text frame selected:  
    var frame = app.selection[0];  
    var gap = frame.parentPage.bounds[2] - frame.parentPage.marginPreferences.bottom - frame.lines[-1].baseline;