PDFjam is a small collection of shell scripts that work similarly to the well
known psutils (psmerge, psnup). They provide a simple interface to some of the
functionality of the pdfpages package for pdfLaTeX. At present, the utilities
available are pdfnup, pdfjoin, and pdf90. PDFjam depends on a working
installation of (pdf)LaTeX.

- pdfnup puts multiple document pages together on one physical page at a
reduced size
- pdfjoin concatenates multiple PDF documents
- pdf90 rotates the pages of PDF documents

Authors:
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David Firth