List clean

LIST_CLEAN

Type Function	BOOL
Input SEP	BYTE (separation sign the list)
I / O LIST	STRING(LIST_LENGTH) (input list)
Output	BOOL (TRUE)
	LIST_CLEAN cleans a list of empty elements. The list consists of Strings (elements) that begin with the separation character SEP.
	LIST_CLEAN('&ABC$23&&NEXT', 38) = '&ABC&23&NEXT'
	LIST_CLEAN('&&23&&NEXT&', 38) = '&23&NEXT'
	LIST_CLEAN('&&&&', 38) = ''