About This Reference > Documentation Conventions

Table 1 defines notice icons used in this guide.

Table 1: Notice Icons 

Icon	Meaning	Description
	Informational note	Indicates important features or instructions.
	Caution	Indicates a situation that might result in loss of data or hardware damage.

Table 2 defines the text and syntax conventions used in this guide.

Table 2: Text and Syntax Conventions 

Convention	Element	Example
Bold text like this	Represents text that you type.	To enter configuration mode, type the configure command: user@host> configure
Fixed-width text like this	Represents output on the terminal screen.	user@host> show chassis alarms No alarms currently active
Italic text like this	Introduces important new terms. Identifies book names. Identifies RFC and Internet draft titles.	A policy term is a named structure that defines match conditions and actions. JUNOS System Basics Configuration Guide RFC 1997, BGP Communities Attribute
Italic text like this	Represents variables (options for which you substitute a value) in commands or configuration statements.	Configure the machine's domain name: [edit] root@# set system domain-name domain-name
Plain text like this	Represents names of configuration statements, commands, files, and directories; IP addresses; configuration hierarchy levels; or labels on routing platform components.	To configure a stub area, include the stub statement at the [edit protocols ospf area area-id] hierarchy level. The console port is labeled CONSOLE.
< > (angle brackets)	Enclose optional keywords or variables.	stub <default-metric metric>;
| (pipe symbol)	Indicates a choice between the mutually exclusive keywords or variables on either side of the symbol. The set of choices is often enclosed in parentheses for clarity.	broadcast | multicast (string1 | string2 | string3)
# (pound sign)	Indicates a comment specified on the same line as the configuration statement to which it applies.	rsvp {  # Required for dynamic MPLS only
[ ] (square brackets)	Enclose a variable for which you can substitute one or more values.	community name members [ community-ids ]
Indention and braces ( { } )	Identify a level in the configuration hierarchy.	[edit] routing-options {        static {            route default {                 nexthop address;                 retain;            }        }  }
; (semicolon)	Identifies a leaf statement at a configuration hierarchy level.
J-Web GUI Conventions
Bold text like this	Represents J-Web graphical user interface (GUI) items you click or select.	In the Logical Interfaces box, select All Interfaces. To cancel the configuration, click Cancel.
> (bold right angle bracket)	Separates levels in a hierarchy of J-Web selections.	In the configuration editor hierarchy, select Protocols>Ospf.