Usage: SET PAD_CHAR [string]

This allows you to define what character will be used to "pad" strings
expanded with the "width" expando (See ALIAS special).  It
may syntactically be a string of any length, but only the first character
in the string will actually be used, the rest will be ignored.

Example:
	SET PAD_CHAR -
	EVAL ECHO $[10]{[foo]}

will output:
	foo-------

See also:
	ALIAS expandos
	EVAL
	ECHO
