flash-on in text%

Temporarily hilites a region in the editor without changing the current selection.

• (send a-text flash-on start end at-eol? scroll? timeout) -> void
     start : exact non-negative integer
     end : exact non-negative integer
     at-eol? = #f : boolean
     scroll? = #t : boolean
     timeout = 500 : exact non-negative integer

  See End of Line for a discussion of the at-eol? argument. If scroll? is not #f, the editor's display will be scrolled if necessary to show the hilited region. If timeout is greater than 0, then the hiliting will be automatically turned off after the given number of milliseconds.

  See also flash-off.