3 Typographic Conventions
Technical terms are shown in a bold font like this the first time that they are used. Also:
Anything that is to be typed into a computer program via the keyboard,
or output from one via the screen, is indicated by a ‘typewriter’ or
‘courier’ font like this.
items appearing in graphical windows, such as those used by GAIA or xreduce, are shown
in a sans serif font like this.
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