

  This is an 'etc' program written for digit and Dave.

  Given the lower left corner of 7.5 minute quad in lat/lon, it will find the
  the other three points of the quad and print them out in lat/lon and utm.

Example:
/usr/grass3/etc/aquad   44.22.30n 103.52.30w

Output:
 103.52.3W        44.22.3N            589628.58    4913923.46
 103.52.3W        44.15N              589819.05    4900039.29
 103.45W          44.15N              599798.99    4900183.64
 103.45W          44.22.3N            599587.35    4914067.83

   -mh
