Adjusted heading. Simplified sentence.
@@ -16,8 +16,8 @@ Later examples in this guide make more use of library classes, which
are only slightly more sophisticated than the code snippets included here.
-Domain model
-============
+Domain
+======
Let's start with the domain model. Since the state of an event sourced application
is determined by a sequence of events, so we need to define some events.
@@ -32,8 +32,7 @@ With that in mind, we can begin to write some domain event classes.
In the example below, there are three domain event classes: ``Created``,
``AttributeChanged``, and ``Discarded``. The common attributes of the domain
-event classes - the entity ID, entity version, and the timestamp of the
-event - have been pulled up to a layer supertype ``DomainEvent``.
+event classes have been pulled up to a layer supertype ``DomainEvent``.
.. code:: python
