PSFIXBB - fixing the BoundingBox in postscript files
PSFIXBB computes the BoundingBox of a postscript file and sets the %%BoundingBox
comment in the file accordingly. The hard work is actually done by ghostscript,
pnmfile and pnmcrop - these programs must be installed on the system.
PSFIXBB is written in Perl and
requires version 5.003 or higher. You can have a look at the PSFIXBB
man page or grab the complete PSFIXBB program
(which contains the man page in POD format).