Help for RASTOGRAF

PURPOSE
     RASTOGRAF is a program used to convert from a line image in raster format
into an IBIS Graphics I file consisting of line segment information. All pixels 
not equal to the BACKground value are considered as parts of lines and are 
included as vectors. For 3-D files, the third value is the DN of the line.

WRITTEN BY:                     Ron Alley, 10 May, 1988
CURRENT COGNIZANT PROGRAMMER:   Ron Alley
REVISION:                       Original
       Made portable for UNIX   AMS (CRI)   2 Jan, 1995