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What are the different types of comment views?
Threaded
Displays comments in a flat style. If there are replies to comments, then a link will be displayed under the original comment saying (1 reply) or however many there are. To read the replies, you need to click on the link.
Nested
Displays replies to comments in an indented style.
Flat
Will display all comments in a flat style, aligned to the left side of the screen, replies to comments will also appear aligned to the left.