From facing lines: Ends (Outs) Pass Thru and Fold as centers Single Circle to face (no wave).
In Fold The Circle -- From facing lines: Centers (Ins) Pass Thru, step ahead and Turn Back (towards the center) as ends slide together and Single Circle to face (no wave).
In/Out Fold And Anything -- As above except that those who would have done the Single Circle do the Anything call. For example, Out Fold Thru: Ends Pass Thru & Fold, Centers Pass Thru.