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21.14 Cropmarks and Magnification

You can (attempt to) direct TeX to print cropmarks at the corners of pages with the @cropmarks command. Write the @cropmarks command on a line by itself near the beginning of the Texinfo file, before the title page, like this:

@cropmarks

This command is mainly for printers that typeset several pages on one sheet of film; but you can attempt to use it to mark the corners of a book set to 7 by 9.25 inches with the @smallbook command. (Printers will not produce cropmarks for regular sized output that is printed on regular sized paper.) Since different printing machines work in different ways, you should explore the use of this command with a spirit of adventure. You may have to redefine the command in texinfo.tex.

The @cropmarks command is recognized and ignored in non-TeX output formats.

You can attempt to direct TeX to typeset pages larger or smaller than usual with the \mag TeX command. Everything that is typeset is scaled proportionally larger or smaller. (\mag stands for “magnification”.) This is not a Texinfo @-command, but is a raw TeX command that is prefixed with a backslash. You have to write this command between @tex and @end tex (see Raw Formatter Commands).

Follow the \mag command with an ‘=’ and then a number that is 1000 times the magnification you desire. For example, to print pages at 1.2 normal size, write the following near the beginning of the Texinfo file, before the title page:

@tex
\mag=1200
@end tex

With some printing technologies, you can print normal-sized copies that look better than usual by giving a larger-than-normal master to your print shop. They do the reduction, thus effectively increasing the resolution.

Depending on your system, DVI files prepared with a nonstandard-\mag may not print or may print only with certain magnifications. Be prepared to experiment.


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