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name snapshot
category Package
shortdesc List the external dependencies of a LaTeX document.
longdesc The snapshot package helps the owner of a LaTeX document obtain a
longdesc list of the external dependencies of the document, in a form that
longdesc can be embedded at the top of the document. It provides a snapshot
longdesc of the current processing context of the document, insofar as it
longdesc can be determined from inside LaTeX.  If a document contains such
longdesc a dependency list, then it becomes possible to arrange that the
longdesc document be processed always with the same versions of everything,
longdesc in order to ensure the same output. This could be useful for
longdesc someone wanting to keep a LaTeX document on hand and consistently
longdesc reproduce an identical DVI file from it, on the fly; or for
longdesc someone wanting to shield a document during the final stages of
longdesc its production cycle from unexpected side effects of routine
longdesc upgrades to the TeX system. [description copied from TeX
longdesc Catalogue]