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I sometimes see tex.pro mentioned and sometimes texc.pro mentioned. What are the differences betweeen those two?

Possibly resulting questions:

  • Are those relevant to the end user (me)?
  • Should I give dvips special options to choose one over the other?
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Welcome to TeX.SX. – Claudio Fiandrino Feb 6 '13 at 13:01
up vote 5 down vote accepted

If option -Z is used, dvips uses texc.pro instead of tex.pro. From the manual page:

-Z  Causes  bitmapped fonts to be compressed before they are downloaded,
    thereby reducing the size of the PostScript font-downloading information.
    Especially useful at high resolutions or when very large  fonts are used.
    Will slow down printing somewhat, especially on early 68000-based Post-
    Script printers.

Thus the c of texc.pro most likely comes from compressed. Since usually vector fonts should be preferred over bitmapped fonts (avoiding blurred displays of the PDF file in AR), IMHO the relevance of the option is a little smaller nowadays.

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