The whole [Core concepts](#doc-core-concepts) section focuses on the
third definition. An event is always registered to _one or more_
channels and may be enabled or disabled at will per channel. A disabled
-event will never lead to a recorded event, even if its channel
-is enabled.
+event never leads to a recorded event, even if its channel is enabled.
An event (3) is enabled with a few conditions that must _all_ be met
when an event (1) happens in order to generate a recorded event (2):
log level range specified when enabling the event.
3. **Optionally**, the occurring event must satisfy a custom
expression, or _filter_, specified when enabling the event.
-
-The following illustration summarizes how tracing sessions, domains,
-channels and events are related:
-
-<div class="img img-90">
-<object data="/images/docs26/core-concepts.svg" type="image/svg+xml">
- <img src="/images/docs26/core-concepts.svg">
-</object>
-</div>
-
-This diagram also shows how events may be individually enabled/disabled
-(green/grey) and how a given event may be registered to more than one
-channel.