We need to make CrawPeaks and subsequent peak extension one algorithm for assigning peak start and stop times for peak groups. Sangtae Kim's team would like to be able to try implementing a new algorithm, and Avant Garde essentially did this by exporting all of the chromatogram data, picking outside Skyline in R and then re-importing new peak boundaries. We need to make CrawPeaks-extended replaceable to allow someone to come up with a better algorithm, maybe even our own team.