Just incidentally, I'll quarrel wtih the Subject of this thread.

This problem dealing with "Dr" or "Dr." is not really a matter of grammar. It's not even, in the older and technical sense of the word, to do with punctuation, which is the rules for using signs such as the period (full stop), comma, semicolon and colon, and maybe the dash, to regulate the rhythm, I suppose you'd say, or timing, of reading a written text.

May of the written symbols we use aren't punctation, although we sometimes loosely refer to them as such. Take the question mark (?) and the exclamation point (!), which are rhetorical indicators.

But none of those marks have to do with grammar.

Dave Oesterreich

Dave Oesterreich