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Command Reference

114089 Rev. A 2-9

gosub

The gosub command calls a subroutine inside the same script ﬁle. It must be the

last command on a line. A subroutine begins and ends with a colon (:). You can

nest subroutines up to 10 deep. You use the

return command in a subroutine to

return to the calling routine. When the

return command executes, the script

interpreter begins executing the instructions on the line following the line

containing the

gosub command.

The

gosub command has the following syntax:

gosub :

<subroutine_name>

is the name of the subroutine.

The following example shows a script using the

gosub and return commands:

:main:

let arg = 1; gosub :SUBROUTINE:

echo “Return value: $return”

goto :EXIT:

:SUBROUTINE:

let return = ($arg*$arg) + $arg + 1

return

:EXIT:

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Avaya Writing Technician Interface Scripts Manual do Utilizador Página 43