clear-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.