Recently I accidently wrote:
 
        :PRINT ,<filename>
 
This seemed to lead me to a cat-like command where you could exchange
the contents of the file with what you wrote after pressing <RETURN>.
 
If you afterwards try to print <filename> you will get what you wrote
after having pressed <RETURN>. But, if you do a LISTF,2 on the file it
still has the old characteristics.
 
I think I was using MPE/iX version 5 but I am not sure.
 
Have I been staring to much on the screen on my workstation or is this an
already documented feature of the PRINT command?
 
Rgds.
Anders MORK