Cisco Systems 78-11741-02 manual Xxxiv

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Document Conventions

				Command syntax descriptions use the following conventions:
Convention				Description
boldface				Boldface text indicates commands and keywords that you enter literally as shown.
italics				Italic text indicates arguments for which you supply values.
[x]				Square brackets enclose an optional element (keyword or argument).
				A vertical line indicates a choice within an optional or required set of keywords or arguments.
[x y]				Square brackets enclosing keywords or arguments separated by a vertical line indicate an optional
				choice.
{x y}				Braces enclosing keywords or arguments separated by a vertical line indicate a required choice.
				Nested sets of square brackets or braces indicate optional or required choices within optional or
				required elements. For example:
Convention				Description
[x {y z}]				Braces and a vertical line within square brackets indicate a required choice within an optional element.
				Examples use the following conventions:
Convention				Description
screen				Examples of information displayed on the screen are set in Courier font.
boldface screen				Examples of text that you must enter are set in Courier bold font.
<	>			Angle brackets enclose text that is not printed to the screen, such as passwords.
!				An exclamation point at the beginning of a line indicates a comment line. (Exclamation points are also
				displayed by the Cisco IOS software for certain processes.)
[	]			Square brackets enclose default responses to system prompts.
				The following conventions are used to attract the attention of the reader:
		Caution		Means reader be careful. In this situation, you might do something that could result in
				equipment damage or loss of data.
			Note	Means reader take note. Notes contain helpful suggestions or references to materials not
				contained in this manual.
		Timesaver		Means the described action saves time. You can save time by performing the action
				described in the paragraph.

Cisco IOS IP Configuration Guide

xxxiv