14.3.2 Ending a Sentence

Use @. instead of a period, @! instead of an exclamation point, and @? instead of a question mark at the end of a sentence that ends with a capital letter. Otherwise, TeX will think the letter is an abbreviation and will not insert the correct end-of-sentence spacing. Here is an example:

Give it to M.I.B. and to M.E.W@.  Also, give it to R.J.C@.
Give it to M.I.B. and to M.E.W.  Also, give it to R.J.C.

produces

Give it to M.I.B. and to M.E.W. Also, give it to R.J.C.
Give it to M.I.B. and to M.E.W. Also, give it to R.J.C.

In the Info file output, @. is equivalent to a simple ‘.’; likewise for @! and @?.

The meanings of @: and @. in Texinfo are designed to work well with the Emacs sentence motion commands (see (emacs)Sentences section `Sentences' in The GNU Emacs Manual).

Do not put braces after any of these commands.