What's a piece of esoteric knowledge you have?

There's a trick with our loan servicing XML imports. If you pre-encode the property address into a [Comment] tag inside the [CIF] section, the system auto-fills it in three different screens, even though none of them actually pull from that tag offcially. I don't know why it works, just that it does. Doesn't really save me more than about thirty seconds but when you're boarding dozens of loans per week, it can add up.