Announce

Displays the message in an alert box. Clicking OK closes the box. See question and answer. To reposition the default alert box, use the set command. The position is in turtle coordinates; [0 0] is the middle of the page. The default position is [-200 50]. This is the position of the upper, left corner of the alert box. If the position accidentally places part of the box outside of the screen, use Enter to close the box.

If this variable is changed, you should have a startup procedure to reset it each time you load the project.

Example:

announce [You win!!]