Italics are used to denote a defined term or definition that appears in Subclause 3.1.

Italics are also used to denote the name of a service input or output parameter or the name of a structure or element of a structure that are usually defined in tables.

The italicized terms and names are also often written in camel-case (the practice of writing compound words or phrases in which the elements are joined without spaces, with each element's initial letter capitalized within the compound). For example, the defined term is AddressSpace instead of Address Space. This makes it easier to understand that there is a single definition for AddressSpace, not separate definitions for Address and Space. Terms or names where two capital letters of abbreviations are in sequence or for separation to a suffix are written with underscores in between.

The abbreviation “F” is an indication for safety related items, technologies, systems, and units (fail-safe, functional safe).

The default data that are used in case of unit failures or errors, are called fail-safe substitute Values (FSV) and are set to binary “0”.

Reserved bit (“res”) are set to “0” and ignored by the receiver for avoiding problems with future versions of this document.

The notation 0x… represents a hexadecimal value.