ViewPoint Manual

Process Definition Commands
ViewPoint Manual—426801-001
4-19
Issuing Commands to a Defined Process
IN file-name
takes input from the specified existing file.
INV variable
takes input from the specified existing variable.
out-option
is any of the following options:
OUT file-name
waits for the process to finish and then directs its output to the named file. If the
file does not exist, it is created.
OUTV variable
waits for the process to finish and then directs its output to the named existing
variable.
NOWAIT
waits for the process to finish or displays output. This option overrides the
default wait mode of the process.
WAIT
waits for the output from the command displayed on the terminal. This option
overrides the default wait mode of the process.
command-text
is a one-line command to pass to the process. The syntax is analogous to the text
you enter following a TACL RUN command.
Passthrough Mode
If command-text is omitted and input has not been redirected to a file or variable,
you enter passthrough mode with the process. In this case, the process prompts you; the
prompt is prefixed with the current history number (unless history is disabled). Each
command you type at the prompt is passed literally to the process (if not modified by a
preparse routine), and the terminal waits or does not wait for output from the command,
depending on the current wait mode.
If history is enabled, the FC, !, and ? commands are trapped and processed by TACL.
History text appears in the TACL history buffer. You can view this buffer with the
HISTORY command at a TACL prompt.
If function-key processing is enabled, function keys are trapped. The function-key
macro is invoked (such as F1 or F2), passing the commands typed before the function
key was pressed.