These are (renamed) copies of the LaserJet 4-PS and LaserJet 5 definitions,
which have been reported to drive the LaserJet 5000 printer.

The Postscript driver is reported to allow access at both A3 and A4, and (in
theory) at 1200dpi though this will probably run into problems unless the
memory in the printer is significantly expanded.

The PCL driver is free from memory problems but is limited to A4 unless LJDuplex
is used (whereupon A3 and Duplexing become possible).
