Example: You wish to work part time on a laptop and part time on a desk PC. Per the license agreement, you can only run HER on one PC. As the author and owner of the program, however, I grant you permission to install the program on a second PC for the express purpose of working on the same data set part time at each PC. The thing to remember is that the data is only valid on one PC at a time. So you install it on PC 1 then enter some data. Now to use the program on PC 2, you install the software there then create a backup floppy on PC 1 and carry it to PC 2 were you do a data restore operation. Now if you enter new data on PC 2, you must back it up to a floppy and carry the floppy back to PC 1 and restore it there. Once you enter new data, that PC has the "current" data set. To move to the other PC, the fresh data must be shuttled via the backup/restore method.