* #IFNOTDEF ( "word" -- ) better use [DEFINED] word [NOT] [IF] - the word [IF] and [ELSE] are ANSI-conform, while #IFDEF #ELSE are not.
#IFNOTDEF
( "word" -- )
[DEFINED] word [NOT] [IF]
[IF]
[ELSE]
#IFDEF
#ELSE
FORTH/BASE cdecl immediate primitive