ADD_INTERFACE (Hara_kiri_group_spanner,
"A group spanner that keeps track of interesting items. If it"
" doesn't contain any after line breaking, it removes itself"
- " and all its children. Children may be prioritized in layers"
- " via @code{remove-layer}, in which case only the"
- " lowest-numbered non-empty layer is retained.",
+ " and all its children. Greater control can be exercised via"
+ " @code{remove-layer} which can prioritize layers so only the"
+ " lowest-numbered non-empty layer is retained; make the layer"
+ " independent of the group; or make it dependent on any other"
+ " member of the group",
/* properties */
"items-worth-living "