README for vpfviewer (vhclmaps 0.7)

vpfviewer is a program for viewing DCW and VMAP Level 0 data in VPF
format.  See the top-level vhclmaps README for details on how to acquire
this data, or call 1-800-USA-MAPS to buy the 4 CD-ROM set.

Arguments specific to vpfviewer are:
	-mapdb pathname (or -database pathname)	pathname of DCW database
	-maplib libname (or -library libname)	library name
	-mapcov covname (or -coverage covname)  coverage name
	-mapfcl fcname (or -fclass fcname)	feature class

The default for vpfviewer is:

	vpfviewer -mapdb /cdrom/dcw -maplib browse -mapcov po -mapfcl poarea

Also vpfviewer has its own document format, which is controlled by the
File menu of a running vpfviewer.  To launch on a vpfviewer document,
simply supply it as the only argument to vpfviewer, i.e.:

        vpfviewer document.vpfs

"vpfviewer -help" lists other parameters. More instructions on running
vpfviewer at http://www.vectaport.com/vhclmaps/.