I did a directory listing to find out what files were on the computer, looking for the LOCK-11 program and associated files and stumbled on something I found shocking: a directory that should not have been on this machine. The developers had been so overconfident, so certain their software was invincible, that they hadn't bothered to remove the source code of their new product. Moving to the adjacent hard-copy terminal, I started printing out portions of the source code onto the continuous sheets of the green-striped computer paper used in those days.