1. with naturalOrder=true make scan the rest to be consistent with seqscan [done] 2. add leftlink to data page to privide backward scan on index (<=| op) [done] 3. Compression of ItemPointer for use_alternative_order 4. Compression addInfo 5. Remove FROM_STRATEGY ugly magick [done] BTREE: 1 fix changes in rum--1.0.sql [done] 2 adding using as addinfo