Clears contents, formats, notes, or all of these from the active worksheet
[C++]
static int Clear(
   unsigned short type_num
);
Type_num is a number from 1 to 4 specifying what to clear.
Zero if the function has been called successfully; non-zero
            if the function could not be called.
            See Error codes for a list
            of return values.
See the Microsoft Excel on-line Help for full details about
            this function.
Header: xlfuncs.h