Optional Parameter

A single optional parameter appears below the horizontal line that marks the main path.

The following is a diagram of a statement with an optional parameter:

►►─ COMMAND ─┬─────────────┬──────────────────────────────────────────────────►◄
             └─ PARAMETER ─┘

You can choose to use the optional parameter, as shown in the following examples:

COMMAND
COMMAND PARAMETER