////Loop virtually through all lines in file
////(Cursor will not move! 
//// We access each line by its number only.)

LinesInFile = document.GetLines();
LineToStart = 1;
alert ("Lines in file: " + LinesInFile);

////For Each Line in File Do:
for (var LINE = LineToStart; LINE <= LinesInFile; LINE++)
 {
  ////Get the lines content:
  str = document.GetLine(LINE);
  	
  ////===Example use, add here your own code======
       ////Show the content and ask to continue:
       bAnswer = confirm("Processing line " + LINE 
          + ".  Content:\n\n"
    	  + str + "\n\n\n\n"
	  + "Continue?" );
  	  
       ////What to do If you pressed cancel?:
       if (bAnswer == false){break;} 
        //use "break; to exit the "for" loop only
        //use "quit();" to cancel the whole script
  ////===END of Example use, =====================
 }

 alert("All done. Script quits.");