 Partial interval recording. This is a method, but it seems to be a pattern today. So partial interval recording is just when you set up a time period and you break it into chunks, right, intervals. So let's say you got an hour, you break that up into two-minute chunks or something, and you're trying to track a particular behavior. Let's say talking out of turn. Actually, we could say mumbling, since that seems to be, right. So in a partial interval recording method, what you have to do is during each interval, if the behavior in question happens at all, even for the briefest of moments, then you mark it down, right. So if you broke this one-minute video up into intervals of like 10-second intervals, how many intervals are there? You don't have to do it for the entire interval, just a little piece of it. It tends to over-estimate behavior, which is great if you have a problem behavior, then you can really get your tools into something and you're trying to reduce that behavior really well or have more chance of it. I don't know. It's a really good method. It's really easy. People use it all the time. Highly effective. I really like partial interval recording, if you can't tell.