AM_MOD_SECTION_VIEW_MODE switches between displaying only sectioned
surfaces or all view aspects in existing section views.
+-------------------<------------------+
| |
| |
----->(AM_MOD_SECTION_VIEW_MODE)----+---(:SECTION_VIEW)---|select view|----+----->
| |
+---(:SS-SURFACE)---+---(:ON)----+-----+
| |
+---(:OFF)---+
- :SECTION_VIEW specifies the section view to modify.
- :SS-SURFACE toggles between displaying sectioned surfaces only (:ON)
or the entire section view (:OFF).
Use this action to display only sectioned surfaces within a section view,
or to revert to displaying all aspects of the view.
AM_CREATE_SECTION terminate action,
AM_VIEW_UPDATE terminate action