Added definition for LOD (Level-of-Detail)
To understand what this acronym meant, I had to search in the whole github repository.
Generally speaking, I'm wondering in this documentation can use a general approach for not well-known acronyms (for example: adding a glossary).
@@ -95,7 +95,7 @@ CustomJS for user interaction events
In addition to responding to property change events using js_on_change, Bokeh
allows CustomJS callbacks to be triggered by specific interaction events with
-the plot canvas, on button click events, and on LOD events.
+the plot canvas, on button click events, and on LOD (Level-of-Detail) events.
These event callbacks are defined on models using the js_on_event method,
with the callback receiving the event object as a locally defined cb_obj
