Insert a new block in one of the layout zones.
Read whether an individual block is collapsed.
Read whether a layout zone is currently collapsed.
Read the rendering style currently applied to a layout zone.
Move an existing layout block to another zone and optional index.
Open a module using its registered display mode.
Overlay stack controls used by floating modules and popovers.
Remove a layout block by its block id.
Contextual selection menu controls.
Force an individual block to collapsed/opened state.
Force whether an individual block can be collapsed.
Force a layout zone to collapsed/opened state.
Change the rendering style used by a layout zone.
Toggle the collapsed state of an individual block.
Toggle the collapsed state of a layout zone.
Update an existing layout block in place.
Layout-level controls used to rearrange blocks and open modules.