[quote="LITWINCZUK"]And i have another question....
If i remember correctly, in Opus v6 or other version, program when i clicked on button, created a script on hardisk with command to execute (maybe only in ms-dos mode?) How to show command generated with this button?
Send command with >c:\Filename.txt ot something else?[/quote]
Questions like that are best asked in a separate thread, but I can answer it quickly and hopefully save this thread from splitting in half. 
If you just want to see what the command is generating then there are two easy ways to do that.
One is to use the DopTest tool, which prints out its arguments.
Another is to switch the button to the MS-DOS type, add "echo " before each line, and add a "Pause" line (both without the quotes) to the end.