Keywords: sic

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### Procedures (or Command Files)

SIC has command procedure capabilities. A procedure is an external file containing valid commands. The SIC variables PRO%NARG (number of arguments) and PRO%ARG[:] (arguments as an array of character strings) can be accessed from within the procedure; they describe the arguments passed to the procedure when it was invoked. The tokens &1, &2, ..., &8 can also be used in the body of the procedure, its arguments will be substituted for these tokens. Substitution occurs also within the character strings. A procedure is executed by

            SIC> @ Procedure_Name [P1 ... PN]

Commands are read from the file Procedure_Name (with a default extension depending on the calling program or the user) and executed. P1 is a parameter string to be evaluated from PRO%ARG[1] or substituted to the token &1 during execution. Up to 32 parameters may be passed to the procedure. The commands are echoed to the user's terminal if the `VERIFY` switch is set `ON`. Most programs using SIC define a default procedure extension equal to the program name (such as `.greg .class, etc...`). If not specified, the default macro extension is `.pro`. It can be listed and changed using command `SIC EXTENSION`.

Procedures (or any text file indeed) can be typed from within SIC using the command `TYPE`.

            SIC> TYPE Procedure_Name

If no argument is given to `TYPE`, the stack buffer is listed.

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