Sets the assign mode from the first selected handle. Here at the start of a single or (crucially) range selection we decide if we will be assigning the step number or removing items from the step. Everything in the range will either be assigned or removed. This is slightly different from the normal selection but works a lot better for this application.
Namespace: Editor.FixtureOrder
Void Editor.FixtureOrder.SetAssignMode(IEnumerable<Handle> handles)
http://[ip]:4430/titan/script/2/Editor/FixtureOrder/SetAssignMode?handles={handleList}
handles ( IEnumerable<Handle> ) : The handles.