conventions

Italic

Indicates new terms URLs, email addresses, filenames and file extensions

Constant width

Used for program listings, as well as within paragraphs to refer to program
elements such as variable or function names. databases data types, environment variables, statements and keywords.

Constant width bold

Shows commands or other text that should be typed literally by the user.

<Required literal argument>

Shows required arguments or other text that should be typed literally by the user.

[Optional literal argument]

Shows optional arguments or other text that should be typed literally by the user.

Constant width italic

Shows text that should be replaced with user-supplied values or by values determined by context.

<Required argument>

Required arguments that should be replaced with user-supplied values or by value determined by context

[Optional argument]

Optional arguments that should be replaced with user-suppled values or by value determined by context.