The following appendices contain supplementary information on the GNU plotting utilities and the GNU libplot library.

• Fonts and Markers: Text fonts, text strings, and marker symbols
• Color Names: Specifying colors by name
• Page and Viewport Sizes: Specifying the size of an output page
• Metafiles: The device-independent GNU metafile format
• Auxiliary Software: How to obtain auxiliary software
• History and Acknowledgements: The contributors
• Reporting Bugs: How to report bugs
• GNU Free Documentation License: How this manual may be distributed