The text in [] gives the class attribute of the paragraph. The text in parentheses says which edge of the container the paragraph should be aligned against.

[narrow] (left)

[narrow border] (left)

[wide] (left)

[wide border] (left)

[narrow left] (right)

[narrow left border] (right)

[wide left] (spec: right; proposal: left)

[wide left border] (spec: right; proposal: left)

[narrow right] (left)

[narrow right border] (left)

[wide right] (left)

[wide right border] (left)

[narrow left right] (center)

[narrow left right border] (center)

[wide left right] (spec: center; proposal: left)

[wide left right border] (spec: center; proposal: left)