Yup. I worked in a satellite data office of NASA and there was no formal documentation process. Much of the code running in the facility had been written by a

Yup. I worked in a satellite data office of NASA and there was no formal documentation process. Much of the code running in the facility had been written by a single developer over 20 years, and all of the knowledge left with him. Masterful Perl can be frustrating stuff without documentation or comments.