CTAN has a new package: fontch

[CTAN Announcements]

A new package has been installed at tug.ctan.org and should soon appear at
your favorite mirror.

Thanks again,
Jim Hefferon

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The following information was provided by the package's contributor.

Name of contribution: fontch
Author's name: Rodrigo Medina
Location on CTAN: /macros/plain/contrib/fontch/
Summary description: Macros for changing fonts and sizes in plain TeX. T1 
  support
License type: lppl

Announcement text given by the package's contributor:
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 The fontch macros allow to change font size and family in any place of 
a plain TeX document. Sizes of 8, 10, 12, 14, 20 and 24 points are 
available. A sans serif family (\sf) is defined in addition to the 
families already defined in plain TeX. Optional support for Latin 
Modern T1 and TS1 fonts is given. There are macros for non-latin1 
letters and for most TS1 symbols. Math mode always uses CM fonts.
 A command for producing doubled-spaced documents is also provided.
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