V1.01 vs. V1.0

	* fixed a bug in surf.c which surfaces under Linux.
	* added rcs header stuff.

V1.02 vs. V1.01
	
	* command "n" now means NEXT STEP.
	* added more error checking.
	* added axis type 15 and 16 to accomodate 2-dimensional Cartesian
	  system.
	* added command "Y" and "y" for the above two types.
	* HPUX crushing problem partly fixed.
	* reading a file initializes the program.
