184 ;;Quote: coordinate backward recovery by every processor accepting/rejecting a conversation; hard to implement

184 ;;Quote: avoid domino effect by saving good intermediate data for reading by a later process that needs to restart

185 ;;Quote: backward recovery by indicating recovery points for later restoration or purging

185 ;;Quote: implement recovery points by messagelists with history, a recovery cache, and propagated state restorations

193 ;;Quote: guarantee restorability without a domino effect by commutative messagelists or single receiver messages, and the local MRS property