From your Preferences page, you can set discussion replies and content comments
to display all on one level (flat) or indented hierarchically (threaded).
To set up your view style preferences, click your avatar in the upper right corner, and
then Preferences. On the General Preferences tab, select your
Discussion View and Comment View
styles, and then click Save.
Note: Replies to Questions are shown in a unique order: the Correct Answer is always shown
at the top, followed by replies with the most Helpful marks.
display comments and replies chronologically in the order they
were received, and there is no indentation between responses. This view can be
helpful if you like to see comments in the order they were made. However, it can
become difficult to follow conversations between people when a discussion is longer
than a few comments.
In a threaded view, you can see which post a person is responding to
because comments and replies appear indented beneath the post to indicate embedded
replies or comments. This can help you follow conversations because responses remain
associated together visually, like so: