I too have been pretty frustrated with the lack of available
documentation on "HPENV" files, and what each does, so I never used
'em -- I just wrote my own environment files when I had to.

I don't know what results everyone else got when trying these "HPENV"
files out -- experimentation is a key to learning, ya know -- but they
all caused my LJs to have fits.  The only ones that work are the
[log in to unmask] files.  (I heard later that all the HPENV-coded files
were strictly for the 2680, but I do no tknow if that's true.)

When using "FCOPY FROM=<filename>;TO=;HEX;CHAR" (the poor man's file
dump utility), I found that the PCL@ files included only the basic
expected control sequences needed, while the "HPENV" files included
all sorts of goofy stuff that WOULD cause an LJ fits.  (And did.  Do.)
 Notice the EOF too -- much bigger on all the "HPENV" files than on
the PCL files.

Where did HP ever document these "HPENV" files?
(While I'm whining, I might as well ask where the good TTUTIL
examples are too.)

FWIW, the following work fine for me on IP-connected LaserJets

PCLLP.HPENV.SYS = 132-column landscape (line printer mode)
PCLLPD.HPENV.SYS = Ditto, with duplexing

PCLELITE.HPENV.SYS = 80-column portrait (basic LJ output)
PCLELITD.HPENV.SYS = Ditto, with duplexing



A note about the recent PDL/Postscript thread -- Something Nice to
port to MPE might be the Linux "netpbm" set of utilities, which would
allow conversion of any graphics/print format to another.  This
distribution has over a hundred little command-line programs in it
that either convert a particular format to, or from, a Portable Bitmap
Package, as well as manipulate the graphics files while in the
portable format -- doing cropping, re-sizing, etc.  I don't know if
the source for this distribution is available, but something so handy
could be Very Nice Indeed for HP3000s.



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