I have a number of help files from a HP-UX machine that I need to view on a
PC or Sun. `uname -s -r -v -m` gives "HP-UX B.10.20 E 9000/785", and the
file extensions are .sys, .hv, .hvk, .ht, and .tif.

Can anyone suggest a compatible viewer for these files? I am way out of my
depth on HP hardware and software.

Thanks!