Short-form words should be used to represent all the meanings of a word. Thus, the short form for quick should be used in expressions like a quick recovery, the quick and the dead, and hurt to the quick. The short form for must should be used in he must go, the must of the grape, and the closet smelled of must.
The contractions to, into, and by should be joined to short-form words, just as they are to any other word.
The capitalization of short-form words should follow print. Example:
Please Come to Afternoon Tea at 5 O'Clock