The REXX Language, as interpreted by this implementation


NOTE:  There will occasionally be comments headed by `NOTE', `BUG' or
       `LOCAL'. The notes following these will usually be in the
       following categories:
    NOTE - (semi-)important information, pointing out traps or
           differences with other implementations.
    BUG  - a feature of the program (not always a particularly bad one,
           though never beneficial) which may not get fixed.
    LOCAL- a feature of the interpreter which I have deliberately (or
           accidentally) added and is not `real' REXX

NOTE:  Just because any particular description does not contain a note
       headed by `LOCAL', that does not necessarily mean that the
       relevant function behaves exactly according to the REXX
       specification. It does mean, however, that I would like to know
       of such instances where there is a difference, so that I can
       either change the program or add a note to describe the
       behaviour.

The use of non-implemented REXX constructs will produce either error 82
(Syntax error) or error 81 (Un-implemented function).  I hope that there
is none of these, except that error 81 may occur when a .rxfn function
file is found on a system which does not support dynamic libraries.