subsplore
Explore internal structure.
subsplore [<doodlelist>]
Internal structure is explored for each specified doodle. When subsploring a doodle, the currently displayed doodles which are in the specified doodle are grown on that layer. Specified doodles are added to the layermask. If no doodles are listed, the selection is used as input instead. If there is no selection either all displayed doodles are treated as input.
sbs