On Thu, 22 Sep 2011 Martin Scharrer submitted the
storebox
package.
Summary description: New package to store multiple used content only once License type: lppl
Announcement text: ----------------------------------------------------------------------
This package provides store boxes which have the same user interface like normal LaTeX save boxes, but only store the content once in the output file even if it is used several times.
At the moment only native PDF output is supported (i.e. pdflatex and lualatex).
If the stored content is not used in the document after all it is not written to the PDF (at least the pdftex manual says so).
For any other TeX and output format the package simply falls back to use the normal savebox equivalents.
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This package is located at http://mirror.ctan.org/macros/latex/contrib/storebox . More information is at http://www.ctan.org/pkg/storebox (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 .
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Thanks for the upload.
For the CTAN Team Rainer Schöpf