CTAN has a new package: standalone

[CTAN Announcements]

This should within a day be at your local mirror.

Thanks again,
Jim Hef{}feron
Saint Michael's College

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The following information was provided by our fellow contributor:

Name of contribution: standalone
Version number: v0.1
Author's name: Martin Scharrer
Location on CTAN: /macros/latex/contrib/standalone/
Summary description: New class and package 'standalone' to compile TeX pictures 
  standalone or as part of a main document.
License type: lppl

Announcement text: 
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A class and package is provided which allows TeX pictures or
other TeX code to be compiled standalone or as part of a main document.
Special support for pictures with beamer overlays is also
provided.

The package is used in the main document and skips extra preambles in sub-files.
The class can be used simplify the preamble in sub-files. By
default the 'preview' package is used to only display the
code without margins.

The behaviour in standalone mode can be adjusted using a
configuration file 'standalone.cfg' be redefining the
'standalone' environment.
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This package is located at 
   http://tug.ctan.org/tex-archive/macros/latex/contrib/standalone/
.  More information is at
   http://tug.ctan.org/pkg/standalone
(if the package is new it may take a day for that information to 
appear).  We are supported by the TeX Users Group http://www.tug.org .  
Please join a users group; see http://www.tug.org/usergroups.html .