Unclear what this program does. Perhaps it need a program cassette in other drive. Strings in the file show this:

DOS.   
LGOPROG 1 
LOADER FOR STANDALONE PROGRAMS..
NOT WHILE PS IS GOING.
NOTE:  YOU WILL NEED TO REBOOT LATER TO REJOIN THE ARC.

Since it mentions DOS it is probably some way of executing some program outside of the DOS environment. And since it mentions ARC it is probably for 5500 and later since ARC was not supported on 2200.
