flash-on

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 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.