Letters, briefs and reports can be shown with their own typography. Automatic keeps that only while none of your settings above ask otherwise.
Narrows the reading column so each line is shorter and your eyes travel less from one line to the next. Phones keep a full-width column.
Keep Full Width leaves tables, charts, code, videos and galleries at their full size, so nothing is squeezed out of shape.
Everything the game knows, written down: commands and systems, the places in the world, and what there is to do in them.
What you can do, and why it sometimes fails.
Holding more than one class, and the rite that permits it.
