Event editing is in a sense chapter editing. This includes editing
- which convos to show
- what items vendors and armories sell
- what items or how much money villages give
- chapter goals
- which chapter to go to next
- gaiden conditions
- world map events
Event editing does not include
- character or class editing
- graphics editing
- text editing
- map editing
Some people may consider map changes to be part of event editing.
Event editing is mostly done these days with Event Assembler. In early days of event editing people also used hex editors, but most have dropped them in favour of Event Assembler. Nightmare can also do some limited event editing, though modules only exist for a small amount of tasks.