From EC:
TRUE -> -1
FALSE -> 0
NIL -> 0
ALL -> -1
EMPTY -> 0
STRLEN -> length of last immediate string
New with ECX:
LINENUM -> always contains the current line number,
-> useful for debugging.
Amiga support constants:
OLDFILE -> same as dos/dos.m/MODE_OLDFILE (EC)
NEWFILE -> same as dos/dos.m/MODE_NEWFILE (EC)
READWRITE -> same as dos/dos.m/MODE_READWRITE (CreativE)