1	SWAP_XY
This program will take as input the name of a standard X-Y
data file containing data in the form 
 
		2 control bytes, 70 title bytes
		I*2, Real*4, Real*4
		...  ...     ...
		I*2, Real*4, Real*4
		I*2, Real*4, Real*4

interchange the X,Y data pairs, and output the file with
the same name but with the updated data

The format of the command is

		$ SWAPXY filename

At present, sources for SWAPXY are maintained on the VPW maintenance account.
