For the 15th Time, Look It Up

'The Chicago Manual of Style' enters the 21st century

In writing about the time of day, the lowercase form, p.m. -- with periods -- now is preferred to the small-capitals form pm, without periods.

The month-day-year form, as in August 15, 2003, now wins out over the form 15 August 2003.

And when using letters to represent shapes, as in "an L-shaped room," there's no need anymore to use sans-serif type for the letter, as in "L-shaped."

Small matters those