LaTeX class and package 'standalone'
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Copyright (c) 2010 by Martin Scharrer <martin@scharrer-online.de>
WWW: http://latex.scharrer-online.de/standalone/

Allows TeX pictures or other TeX code in sub-files to be compiled standalone 
or as part of a main document.
Provides support for pictures with beamer overlays.

Since v0.3 the package provides options to automatically or manually include 
all sub-files preambles in the main document preamble.