> Typographical Conventions
> The following typographical conventions are used in this manual.

> Table 1 General Typographical Conventions
> Convention | Use
> TIBCO_HOME ENV_HOME EMS_HOME | Many TIBCO products must be installed within the same home directory. This directory is referenced in documentation as TIBCO_HOME. The value of TIBCO_HOME depends on the operating system. For example, on Windows systems, the default value is C:\tibco. Other TIBCO products are installed into an installation environment. Incompatible products and multiple instances of the same product are installed into different installation environments. The directory into which such products are installed is referenced in documentation as ENV_HOME. The value of ENV_HOME depends on the operating system. For example, on Windows systems the default value is C:\tibco. TIBCO Enterprise Message Service installs into a directory within TIBCO_HOME. This directory is referenced in documentation as EMS_HOME. The value of EMS_HOME depends on the operating system. For example on Windows systems, the default value is C:\tibco\ems\5.1.
> code font | Code font identifies commands, code examples, filenames, pathnames, and output displayed in a command window. For example: Use MyCommand to start the TIBCO foo process.
> bold code font | Bold code font is used in the following ways:
> ● | In procedures, to indicate what a user types. For example: Type the username admin.
> ● | In large code samples, to indicate the parts of the sample that are of particular interest.
> ● | In command syntax, to indicate the default value. For example, if no parameter is specified, MyCommand is enabled:
> MyCommand [enable | disable]
> italic font | Italic font is used in the following ways:
> ● | To indicate a document title. For example: See TIBCO BusinessWorks Concepts for more details.
> ● | To introduce new terms For example: A portal page may contain several portlets. Portlets are mini-applications that run in a portal.
> ● | To indicate a variable in a command or code syntax that you must replace. For example: MyCommand pathname
> Key combinations | Key name separated by a plus sign indicate keys pressed simultaneously. For example: Ctrl+C. Key names separated by a comma and space indicate keys pressed one after the other. For example: Esc, Ctrl+Q.

> Table 2 Syntax Typographical Conventions
> Convention | Use
> [ ] | An optional item in a command or code syntax. For example: MyCommand [optional_parameter] required_parameter
> | | A logical ’OR’ that separates multiple items of which only one may be chosen. For example, you can select only one of the following parameters: MyCommand para1 | param2 | param3
> { } | A logical group of items. Other syntax notations may appear within each logical group. For example, the following command requires two parameters, which can be either param1 and param2 or param3 and param4: MyCommand {param1 param2} | {param3 param4} In the next example, the command requires two parameters. The first parameter can be either param1 or param2 and the second can be either param3 or param4: MyCommand {param1 | param2} {param3 | param4} In the next example, the command can accept either two or three parameters. The first parameter must be param1. You can optionally include param2 as the second parameter. And the last parameter is either param3 or param4. MyCommand param1 [param2] {param3 | param4}

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