Github user dawidwys commented on a diff in the pull request:
https://github.com/apache/flink/pull/4041#discussion_r119609218
--- Diff: docs/dev/libs/cep.md ---
@@ -215,12 +303,11 @@ start.subtype(classOf[SubEvent]).where(subEvent =>
... /* some condition */)
</div>
</div>
-As it can be seen here, the subtype condition can also be combined with an
additional filter condition on the subtype.
-In fact, you can always provide multiple conditions by calling `where` and
`subtype` multiple times.
-These conditions will then be combined using the logical AND operator.
+**Combining Conditions:** As shown, the `subtype` condition can be
combined with additional conditions.
+In fact, this holds for every condition. You can arbitrarily combine
multiple conditions by sequentially calling
+`where()`. The final result will be the logical **AND** of the results of
the individual conditions.
-In order to construct or conditions, one has to call the `or` method with
a respective filter function.
-Any existing filter function is then ORed with the given one.
+In order to combine conditions using *OR*, you can call the `or` method,
as shown below.
--- End diff --
bold the OR (*OR* -> **OR**)
`or` -> `or()`
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