Plain TeX is Knuth's original default format for TeX documents.

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21
votes
1answer
678 views

Why do the definitions of \quad, etc. have \relax in them?

Plain Tex defines \quad so: \def\quad{\hskip1em\relax} Why is the \relax there? It's usually used as a token that can't be expanded, serving as a "do nothing" operation after macro expansion is ...
4
votes
2answers
333 views

How do I create a pdf file from old tex code?

How can I convert the old tex file below into a pdf? I would very much like to know as I have a few other files that I would like to convert. Thanks. PS: I selected the shortest example I had to ...