Plugins often respond to events sent by other plugins as well as wiki-client core modules. This makes another namespace that must be managed. Here we keep an index. See Tips for Binding Events
Browser State Events moving forward and back in history.
Drag and Drop Events not already handled by Sortable.
Sortable Events from the jQuery UI package.
Item Alignment Events scroll pages to align like items.
Neighborhood Events for the sitemap fetch lifecycle.
Data Events especially scrubbing and some updates.