Key String Action
From ISBoxer
A Key String Action sends (pastes) a series of text in the given Target window(s)
Contrary to a Keystroke Action, a Key String Action does not attempt to "press and release" individual keystrokes, but instead puts the text on the Windows clipboard (like using Copy), and activates the Paste function. This makes it ideal for storing pasted text for later use, but may behave differently (including not at all) depending on the game you are playing.
Finally, do not use this to store or enter your passwords or other sensitive information, as this functionality is not secure.