paste-text

Inserts text at the position of the insertion cursor. The text may come from any of several windowing system global buffers named in parameters. This command is not typically called directly by name.

X	Typing Control+Y pastes text from the primary selection PRIMARY, or, if the primary selection is empty, from CUT_BUFFER1 (the kill buffer). Typing Alt+Y pastes text from the CLIPBOARD selection.
MS	Typing Control+V pastes text from the cut buffer.

When invoked from a script, if the selection is not in an editor window, the command has no effect.