! $Id: functions,v 1.1 2001/12/07 16:54:13 toast Exp $
Blackened Functions
  Blackened functions are substituted with the format $FUNCTION(arguments).
  A function is an ALIAS which assigns a value to FUNCTION_RETURN.
  For example:
    ALIAS DOUBLE assign FUNCTION_RETURN ${[$0]+[$0]}
  which is the same as:
    ALIAS DOUBLE @ function_return = [$0] * 2
  used with:
    ALIAS SHOWDOUBLE echo $DOUBLE($0)
  will cause
    SHOWDOUBLE 7
  to display "14".

  The following built-in functions already exist and cannot be overriden:
  For a list of built-in functions that cannot be overridden:
    /HELP FUNCTIONS ?

Note:
  The argument separator for most functions is the space character, not the
  comma.
