Additional, updated documentation

docs/feature_leader_key.md

@@ -40,4 +40,10 @@ As you can see, you have a few function. You can use `SEQ_ONE_KEY` for single-ke
 
 Each of these accepts one or more keycodes as arguments. This is an important point: You can use keycodes from **any layer on your keyboard**. That layer would need to be active for the leader macro to fire, obviously.
 
-If you would rather end the sequence with enter instead of having a timeout, include the line `#define LEADER_MODE` in your config.h and you can take as long as you want. If you want to cancel your action, simply press the leader key again.
+If you would rather end the sequence with Enter instead of having a timeout,
+include the line `#define LEADER_MODE_ENTER` in your config.h and you can take
+as long as you want. If you want to cancel your action, simply press the leader
+key again. To reuse an above example, you could type `<Leader>dds<Enter>` in any
+amount of time to trigger the DuckDuckGo search macro, or `<Leader>dd<Leader>`
+to cancel partway through. Leader sequences will _not_ auto-trigger without
+hitting Enter with `LEADER_MODE_ENTER` defined.