 The files contained in this \PF directory constitute the
 U.S. Geological Survey Potential-Field Software Package,
 version 2.2 for the PC.

 Basic subdirectories include:

  \PF\BIN  - contains all executable programs

  \PF\HELP - contains ascii documentation files

  \PF\TEST - contains test data sets (see /PF/HELP/1TESTDAT.HLP)

 Optional subdirectories include:

  \PF\SOURCE - contains source code files

  \PF\NEWSRC - contains newer source code files that use the ASK and IOSYS
               subroutine libraries

  \PF\WDB2 - contains state boundary files for program CONTOUR

 To use these programs on a PC, edit your AUTOEXEC.BAT file to add the
 \PF\BIN directory to your PATH variable, then execute AUTOEXEC.BAT or
 reboot the computer.  Within DOS, go to the directory containing your
 data files, and execute PFMENU or PFHELP.  See also \PF\HELP\1BASICS.HLP
 and \PF\HELP\1OFR9218.TXT.

 DISCLAIMER

 Although the potential-field programs in this package have been used by
 the U.S. Geological Survey, no warranty, expressed or implied, is made
 by the USGS as to the accuracy and functioning of the programs and
 related program material, nor shall the fact of distribution
 constitute any such warranty, and no responsibility is assumed by the
 USGS in connection therewith.

 Registered trade names such as Microsoft, MS-DOS, MS-Fortran,
 WordPerfect, etc., are used for reference in context and do not
 necessarily imply endorsement by the U.S. Geological Survey.

