These settings can be found by navigating to Appearance → Style Properties.
Enable node grid - This setting allows you to enable node grid or disable it, you must have this enabled to be able to see the node grids, edit the node gutter, etc.
Node gutter - Adds a gutter space in between nodes.
Enable node footer - This enables the node footer which includes a few icons which can be clicked. Arrow: Sends you to the forum or sub-forums listing. Plus: Allows you to post a quick thread. Watch: Allows you to subscribe to the forum or sub-forums with just a click.