To Justme:
Actually, I spent 16 years in the Information Technology Department at Texaco, and was often called upon to teach programming and systems analysis courses because "they liked the way I could explain complicated concepts in a simple way." I even taught a course for two years in the Graduate School of Management at Rice University (on loan from Texaco) on Business Systems Analysis and Design.
No charge for teaching you how to use RES, but if you ask just one time, "Why is that code used for that purpose?", the class is over and you will be cast into outer darkness without hope of redemption. The codes in RES are almost totally NON-intuitive. For instance to look at the Standby list (which includes the nonrevs) the string of code ends in PALL. Do NOT ask why PALL means standby list. It just does. Nor, have I met anyone in the past 12 years who knows. And, the standby lists Oversolds (either this flight or rolled over from previous flights) first, then Upgrade Requests (Upgrade requests have their own priority system--Executive Platinums or company bigwigs are usually UPG1, the highest. These people may already have seats assigned in coach; so, this info can be useful); then non-revs listed in D1 through D3 order and by checkin time within a category. However, the standby list does not display check-in times. You just have to have faith that everyone is playing by the rules including the computer. I have heard stories of agents "jiggling the Standby List" to rearrange the order of the names, but I've never seen proof that it happened.