minor fixes

2-ui/99-ui-misc/01-mutation-observer/article.md

@@ -243,14 +243,19 @@ When we stop the observing, it might be possible that some changes were not yet
 These methods can be used together, like this:
 
 ```js
-// we'd like to stop tracking changes
-observer.disconnect();
-
-// handle unprocessed some mutations
+// get a list of unprocessed mutations
 let mutationRecords = observer.takeRecords();
+
+// stop tracking changes
+observer.disconnect();
 ...
 ```
 
+
+```smart header="Records returned by `observer.takeRecords()` are removed from the processing queue"
+The callback won't be called for records, returned by `observer.takeRecords()`.
+```
+
 ```smart header="Garbage collection interaction"
 Observers use weak references to nodes internally. That is, if a node is removed from the DOM, and becomes unreachable, then it can be garbage collected.