42d. Words as words, letters as letters, and numbers as numbers

42dItalicize words mentioned as words, letters mentioned as letters, and numbers mentioned as numbers.

Tomás assured us that the chemicals could probably be safely mixed, but his probably stuck in our minds.

Some toddlers have trouble pronouncing the letters f and s.

A big 3 was painted on the stage door.

note: Quotation marks may be used instead of italics to set off words mentioned as words. (See 37d.)