Hi!

>2. _cliptext, but this works for text only. To clear the clipboard, just use _cliptext="" command - assign empty string to it.

To clear all data types in clipboard:

Declare Long OpenClipboard In user32 Long hWnd
Declare Long CloseClipboard In user32
Declare Long EmptyClipboard In user32

If OpenClipboard(0) != 0
	EmptyClipboard()
	CloseClipboard()
EndIf

>3. I do not know. Maybe, just a name of the variable?

Yes, it's a variable (s) of integer data type (%).