For non-extending scroll in repeating groups to determined scroll position.
Likely to be use to get a native app feel in a web app.
RepeatingGroup Current Scroll Position (returns pixels)
RepeatingGroup Scroll At Start (returns yes/no)
RepeatingGroup Scroll At End (returns yes/no)
RepeatingGroup Scroll Percent (returns number 1-100)
This would allow to present UX elements for adding additional items to the repeating group once the user reaches a position in the repeating group.