For further reading

Here is a short list of literature related to ${\manual META}$ ${\manual FONT}$ and its companions. You should refer to these books when you seek for detailed information about programming in the ${\manual META}$ ${\manual FONT}$ language. Also you may find very interesting stuff about the history of TEX and ${\manual META}$ ${\manual FONT}$ since 1978, typesetting on computers in general, and the literate programming discipline used for the development of ``Computers & Typesetting.''