Note: Do not rely on this information. It is very old.
Punctuation
Punctuation, the use of certain marks or signs which are supposed to indicate the divisions into which a sentence naturally falls. Those most commonly employed are the full stop or period (.), colon (:), semi-colon (;), comma (,), mark of exclamation (!), mark of interrogation (?), inverted commas (“”), dash ( — ), and brackets ( ) or [ ].