ABSTRACT
Punctuation is one of the more logical and helpful aspects of grammar.
Learn enough about it so that it will work for you.
Few people realize that there are two kinds of punctuation: open and
closed. Open refers to using the fewest possible punctuation marks, e.g.,
omitting the comma before the final and in a series or leaving off the
period at the end of a line when listing points on separate lines. Periods
are omitted at the ends of items in a vertical list or enumeration, unless
the items are complete sentences.