Version 1.0.5 of this package was accepted for publication in volume 1 of the journal The Journal of Software for Algebra and Geometry: Macaulay2 on 2009-09-07, in the article Polyhedra: a package for computations with convex polyhedral objects. That version can be obtained from the journal or from the Macaulay2 source code repository, after installing subversion, with the following shell command:
svn export -r 9344 svn://macaulay2.math.uiuc.edu/Macaulay2/trunk/M2/Macaulay2/packages/Polyhedra.m2
The following command will display the log messages accompanying any changes to the file in the repository since publication.
svn log -r 9345:HEAD svn://macaulay2.math.uiuc.edu/Macaulay2/trunk/M2/Macaulay2/packages/Polyhedra.m2
The following command will summarize the changes to the file in the repository since publication, in the format the program diff uses: lines starting with + have been added, and lines starting with - have been removed. (Changes to white space or end of line style will not be reported.)
svn diff -x "-b --ignore-eol-style" -r 9344:HEAD svn://macaulay2.math.uiuc.edu/Macaulay2/trunk/M2/Macaulay2/packages/Polyhedra.m2
The differences between two releases in the repository mentioned in the log can be displayed by replacing 9344:HEAD by the pair of release numbers separated by a colon.