Conventions that this book can use are described in:

Typographical conventions

The typographical conventions are:


Introduces special terminology, denotes internal cross-references, and citations.


Highlights interface elements, such as menu names. Denotes signal names. Also used for terms in descriptive lists, where appropriate.


Denotes text that you can enter at the keyboard, such as commands, file and program names, and source code.


Denotes a permitted abbreviation for a command or option. You can enter the underlined text instead of the full command or option name.

monospace italic

Denotes arguments to monospace text where the argument is to be replaced by a specific value.

monospace bold

Denotes language keywords when used outside example code.

< and >

Enclose replaceable terms for assembler syntax where they appear in code or code fragments. For example:

MRC p15, 0 <Rd>, <CRn>, <CRm>, <Opcode_2>

small capitals

Applies when the relevant term is used in body text. For example:IMPLEMENTATION DEFINED, IMPLEMENTATION SPECIFIC, UNKNOWN, and UNPREDICTABLE.

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