Modify keep-with-next and keep-with-previous handling to support "level-hopping" (see keep-with-next1a and keep-with-previous1a) Full keep handling for tables (there's a remaning problem with keep-with-previous) keep-together support for lists.
xmlgraphics/fop/trunk/src/java/org/apache/fop/layoutmgr/BlockStackingLayoutManager.java