cleanup

Author: djih

README.md

@@ -235,14 +235,14 @@ Amplitude supports assigning users to groups, and performing queries such as cou
 
 In the above example, 'orgId' is a `groupType`, and the value 10 or 15 is the `groupName`. Another example of a `groupType` could a sport that the user participates in, and possible `groupNames` within that type would be tennis, baseball, etc.
 
-You can use `setGroup(groupType, groupName)` to designate which groups a user belongs to. Few things to note: this will also set the `groupType: groupName` as a user property. This will overwrite any existing groupName value set for that user's groupType. For example if Joe was in orgId 10, and you call `setGroup('orgId', 20)`, 20 would replace 10. You can also call `setGroup` multiple times with different groupTypes to add a user to different groups. For example Sue is in orgId: 15, and she also plays sport: soccer. Now when querying, you can Count By both orgId and sport. You are allowed to set up to 5 different groupTypes per user. Any more than that will be ignored from the query UI, although they will still appear as user properties.
+You can use `setGroup(groupType, groupName)` to designate which groups a user belongs to. Few things to note: this will also set the `groupType: groupName` as a user property. **This will overwrite any existing groupName value set for that user's groupType, as well as the corresponding user property value.** For example if Joe was in orgId 10, and you call `setGroup('orgId', 20)`, 20 would replace 10. You can also call `setGroup` multiple times with different groupTypes to add a user to different groups. For example Sue is in orgId: 15, and she also plays sport: soccer. Now when querying, you can Count By both orgId and sport. **You are allowed to set up to 5 different groupTypes per user.** Any more than that will be ignored from the query UI, although they will still appear as user properties.
 
 ```javascript
 amplitude.setGroup('orgId', 15);
 amplitude.setGroup('sport', 'tennis');
 ```
 
-You can also use `logEventWithGroups` to set event-level groups, meaning the group designation only applies for the specific event being logged.
+You can also use `logEventWithGroups` to set event-level groups, meaning the group designation only applies for the specific event being logged and does not persist on the user unless you explicitly set it with `setGroup`.
 
 ```javascript
 var eventProperties = {