Page Comparison

...

1. Click the Comment icon on the item of content.
   Image RemovedImage Added

2. If the item of content exists in multiple communities, a popup appears, where you must select the community your comment will be visible in. Select a community from the list and click Confirm. By selecting a specific community, your comment will only be visible to those users in the community with permission to see the item of content. 
   Image RemovedImage Added
   The Write new comment... field appears.
   

3.  In the Write a comment... field, enter your comment. 
4. Click Post.
   Image RemovedImage Added
   The comment is posted underneath the content card.
   Image RemovedImage Added

Replying to a parent comment 

...

To reply to a parent comment: 

1. Click Reply.
   Image RemovedImage Added

2. The Reply to [username] field appears.
   Image RemovedImage Added
3. Enter your comment. 
   Image RemovedImage Added
4. Click Post.
   The reply is posted.

...