In the following example, [;PASS] is an optional parameter because brac kets surround it:

NEWGROUP groupname 2 ;PASS= 2 password 33

In this example, PASS is the parameter and password is the parameter value. You would substitute an actual passw ord in place of password to provide a value for the parameter PASS. The syntax diagram indicates that the v alue password is optional within the optional parameter PASS.

Positional parameters

The e￿ect of a positional parameter depends on its location in the parameter list. In the syn tax diagram for eac h command, the comma (,) separates positional parameters. If y ou omit a positional parameter from the list, you must provide a comma placeholder that w ould normally precede that parameter.

In the following example, the parameter v alues that follo w the command are positional:

LIMIT 10,32

In the following example, a comma holds the position of the curren t value of the ￿rst parameter:

LIMIT ,32

Introduction to Command Parameters 1-3