# A Beginner’s Book of TEX by Raymond Seroul

By Raymond Seroul

The final 20 years have witnessed a revolution within the realm of typography, with the digital disappearance of hot-lead typesetting in desire of the so-called electronic typesetting. the main at the back of the recent know-how is straightforward: think a truly superb mesh superimposed on a sheet of paper. electronic typesetting is composed in darkening the best pixels (tiny squares) of this mesh, in styles similar to every one personality and image of the textual content being set. the particular darkening is finished through a few printing equipment, say a laser printer or phototypesetter, which has to be informed precisely the place the ink may still pass. because the mesh is especially fine-the dashes surrounding this sentence are a few six pixels thick, and greater than 2 hundred pixels long-the printer can merely be managed by means of a working laptop or computer software, which takes a "high-level" description of the web page when it comes to textual content, fonts, and formatting instructions, and digests all of that into "low-level" instructions for the printer. TEX is the sort of application, created by means of Donald E. Knuth, a working laptop or computer scientist at Stanford University.

By Raymond Seroul

The final 20 years have witnessed a revolution within the realm of typography, with the digital disappearance of hot-lead typesetting in desire of the so-called electronic typesetting. the main at the back of the recent know-how is straightforward: think a truly superb mesh superimposed on a sheet of paper. electronic typesetting is composed in darkening the best pixels (tiny squares) of this mesh, in styles similar to every one personality and image of the textual content being set. the particular darkening is finished through a few printing equipment, say a laser printer or phototypesetter, which has to be informed precisely the place the ink may still pass. because the mesh is especially fine-the dashes surrounding this sentence are a few six pixels thick, and greater than 2 hundred pixels long-the printer can merely be managed by means of a working laptop or computer software, which takes a "high-level" description of the web page when it comes to textual content, fonts, and formatting instructions, and digests all of that into "low-level" instructions for the printer. TEX is the sort of application, created by means of Donald E. Knuth, a working laptop or computer scientist at Stanford University.

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Additional resources for A Beginner’s Book of TEX

Example text

Here are some more examples of PostScript font registering: \font\tenpalatino=Palatino at 10pt \font\bighelvetica=Helvetica at 30pt One last thing: each scaled version of a font must be registered separately. For example, saying \font\twelvebf=cmrl0 at 12pt does not entitle you to use cmrl0 at the design size of 10 pt. In other words, a font registration command associates with a control sequence a pair (file name, scaling factor), and that pair only. 6 Global scaling The next command isn't, properly speaking, a font command: it allows you to magnify or shrink a whole document.

2A 2 , nAn + B 2S , S R + B 2 s, S - $R+B-{2-S}$, $S-B-{R_S}$ .. ....... ............ R BRs $R+B32-S}$, $S-B_ {R_S}$ ......................... B Rs The upshot of this intricate mechanism is that, while in normal text there is the notion of a single current font, in math mode we have instead a current family of similar-looking fonts in three different sizes, for example, 10, 7 and 5 point. A family of math fonts is referred to by the control sequence \fam, followed by a number, like \famO.

The other pair, \begingroup and \endgroup, is not synonymous with braces: a group starting with \begingroup must end with \endgroup. Why this distinction? Because it allows one to build mechanisms to check for errors much more thoroughly than can be done in plain T]jX. ) For example, U\T£X uses \begingroup and \endgroup to define environments that begin and end with paired commands. If your file has something like \begin{document} ... \begin{theorem} ... \end{document}, you probably left something out inadvertently, and an error message is generated saying that the \begin{ theorem} doesn't have a matching \end{ theorem}.