this guide uses the following typographical conventions:

    italics book titles and unix file, command, and directory names.

    courier font screen text, user-typed command-line entries.

    initial caps menu titles and window and button names.

    [enter] named keys in text are shown enclosed in square brackets. the notation

    [enter] is used for the enter key and the return key.

    [ctrl]+c two or more keys that must be pressed simultaneously are shown in text linked with a plus (+) sign.

    all caps dos file and directory names.