clear-rectangleclear-rectangle is an interactive autoloaded compiled Lisp function in `
rect.el'. It is bound to C-x r c.
(clear-rectangle START END &optional FILL) Blank out the region-rectangle. The text previously in the region is overwritten with blanks. When called from a program the rectangle's corners are START and END. With a prefix (or a FILL) argument, also fill with blanks the parts of the rectangle which were empty.