Go to the first, previous, next, last section, table of contents.

Typographical Conventions

This book is written using Texinfo, the GNU documentation formatting language. A single Texinfo source file is used to produce both the printed and on-line versions of the documentation. Because of this, the typographical conventions are slightly different than in other books you may have read.

Examples you would type at the command line are preceded by the common shell primary and secondary prompts, `$' and `>'. Output from the command is preceded by the glyph "-|". This typically represents the command's standard output. Error messages, and other output on the command's standard error, are preceded by the glyph "error-->". For example:

$ echo hi on stdout
-| hi on stdout
$ echo hello on stderr 1>&2
error--> hello on stderr

In the text, command names appear in this font, while code segments appear in the same font and quoted, `like this'. Some things will be emphasized like this, and if a point needs to be made strongly, it will be done like this. The first occurrence of a new term is usually its definition, and appears in the same font as the previous occurrence of "definition" in this sentence. File names are indicated like this: `/path/to/ourfile'.

Characters that you type at the keyboard look like this. In particular, there are special characters called "control characters." These are characters that you type by holding down both the CONTROL key and another key, at the same time. For example, a Control-d is typed by first pressing and holding the CONTROL key, next pressing the d key, and finally releasing both keys.

Go to the first, previous, next, last section, table of contents.