2014-08-24-23.05.26: src/lib/x-kit/widget/gui/gadget-to-guiboss.pkg: note_changed_gadget_appearance:  Added   point_in_gadget: Null_Or(g2d::Point -> Bool)   field to call.   src/lib/x-kit/widget/gui/guiboss-imp.pkg:  Implemented point_in_gadget functionality.  src/lib/x-kit/widget/leaf/arrowbutton.pkg: default_appearance():  Provide point_in_gadget() fn for guiboss.  Result: Now you have to actually click *on* an arrowbutton, not just anywhere in its assigned window rectangle.