This document uses the following formatting conventions.
Plain text is written in a normal style font:
The Bourne shell contains many built-in commands.
Commands and options entered by a user are displayed in a fixed width,
Responses and queries provided by the operating system are shown in a fixed
/bin/ls: /etc/raddb/users file not found.
Table and diagram captions are given with an italic font:
Table 1.2-1: Quoting Mechanisms