The TEX and LATEX fonts are automatically installed when the !TeXFonts
application is seen by the Filer.
This means that other applications will have these fonts available to them,
which is handy if you are exporting pages as Draw files and want them to be
displayed properly. Note that the TEX fonts have letters in different places
to standard fonts and so you'll have to use !Chars to select characters if
you want to use TEX fonts in, say, Impression or TechWriter.
If DVIview cannot find a particular font then it will (do something
that I haven't implemented yet :-) )