tds: Mode and resolution location
C.2.2 Mode and resolution location
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We considered having the `mode' at the bottom of the font tree:
texmf/fonts/pk/SUPPLIER/TYPEFACE/MODE/DPI/
In this case, however, it is difficult to limit subdirectory
searching to the mode required for a particular device.
We then considered moving the `dpiNNN' up to below the mode:
texmf/fonts/pk/MODE/DPI/SUPPLIER/TYPEFACE/
But then it is not feasible to omit the `dpiNNN' level altogether on
systems which can and do choose to use long filenames.