HP Systems Insight Manager 5.2 Installation and Configuration Guide for HP-UX

Variable Name of a variable that you can replace in a command or function or information in a display that represents several possible
values.
[ ] Contents are optional in formats and command descriptions. If the contents are a list separated by |, you must choose one of
the items.
{ } Contents are required in formats and command descriptions. If the contents are a list separated by |, you must choose one of
the items.
... Preceding element can be repeated an arbitrary number of times.
| Separates items in a list of choices.