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TCO
Opens the global tracing console -- a standard console window that can be
moved and resized by the user and will have all of the standard input
controls of the user-shell specified for the system.
Trace output generated by currently active ARexx scripts will be diverted
immediately to the tracing console.
The tracing output itself is controlled by the TRACE instruction, the
TRACE() function, and by the TS and TE commands.
If a trace request is issued when the trace console is not open, ARexx
will attempt to output the trace to a shell. Without the trace console,
however, ARexx will usually have no place to send trace output from a
macro started within an application program.
The trace console is opened as the logical device STDERR . If the trace
console is open, an ARexx program may send output to the window with the
instruction { CALL WRITELN STDERR, <output> }. The instruction { PARSE
EXTERNAL <template> } will retrieve user input from the trace console
rather than the CLI.
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