refresh in editor<%>
Repaints a region of the editor, generally called by an editor administrator. See Editors and Threads for information about edit sequences and refresh requests.
( -> void
send an-editor refresh x y width height draw-caret)
x : real number
y : real number
width : non-negative real number
height : non-negative real number
draw-caret : symbol in '(no-caret show-inactive-caret show-caret)
The x, y, width, and height arguments specify
the area that needs repainting in editor coordinates.
See Caret for information about draw-caret.