The $ERR command is used to display an error message (or messages) from a
predefined list of over 100 messages.
Usually, five lines are displayed (all in red if color is supported):
{a blank line}
($$$14nn) *error*:
an error message
maybe error message2
possible error message3
for the ──────── ccc ──────── command.
{a blank line}
The format of the $ERR command is:
╔══════════════════════════════════════════════════════════════════════════════╗
║ ║
║ $ERR errnum EXECname {xxx yyy zzz} {..F=fff} ║
║ , ║
║ ? ║
║ ?AUTHOR ║
║ ?FLOW ║
║ ?SAMPLES ║
║ ║
╚══════════════════════════════════════════════════════════════════════════════╝
───where:
? shows this help file (press ESC to quit when viewing).
?AUTHOR shows the author of this program.
?FLOW shows the external execution flow of this program.
?SAMPLES shows some sample uses (press ESC to quit when viewing).
errnum is the number of the error message(s) (numbered from 1400──►1499),
or 14.1 (which indicates that the REXX program has been HALTed).
0 exits $ERR.
'
EXECname is the name of the invoking EXEC and if not a comma, it's shown in
the last error message (see above).
xxx yyy zzz are optional arguments that the error message text(s) may require.
fff is an optional filename that the error message text(s) are written
to. Any commas (,) in the filename are translated to blanks
before it's used.
The return code is set to the last two digits of the errnum, except for error
1468, which uses the retcode (error code) from the 3rd argment which is an
code code recieved from another command that failed.
Another special case is error 14.1 which signifies that the REXX program has
been HALTed and the return code is set to 14000.
Ω
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