- Book Title
Title of a book or other document.
Title that is a hyperlink to a book or other document.
A website address that is a hyperlink
to the site.
Command name or qualified command phrase.
- user input
Commands and other text that you type.
Text displayed by the computer.
The name of a keyboard key. Note that Return and Enter both refer to the same key.
A sequence such as Ctrl+A indicates that
you must hold down the key labeled Ctrl while pressing the A key.
Defined use of an important word or phrase.
The name of an environment variable,
for example PATH or errno.
A value that you might replace in a command or function,
or information in a display that represents several possible