3Com PSE2500-A3 user manual Convention Description Boldface

I. Command conventions

Convention	Description
Boldface	The keywords of a command line are in
	Boldface.
italic	Command arguments are in italic.
[ ]	Items (keywords or arguments) in square
	brackets [ ] are optional.
	Alternative items are grouped in braces
{ x y ... }	and separated by vertical bars. One is
	selected.
[ x y ... ]	Optional alternative items are grouped in
	square brackets and separated by vertical
	bars. One or none is selected.
	Alternative items are grouped in braces
{ x y ... } *	and separated by vertical bars. A minimum
	of one or a maximum of all can be selected.
	Optional alternative items are grouped in
[ x y ... ] *	square brackets and separated by vertical
	bars. Many or none can be selected.
#	A line starting with the # sign is comments.

II.GUI conventions

Convention	Description
< >	Button names are inside angle brackets.
	For example, For example, click <OK>.