What a friendly little aid; it is best used to separate two independent clauses.
Use it for a closer relationship than a period; note that it is less subtle than a comma.
Have a complicated list or series? Have no fear! For the semicolon will be your companion.
The semicolon is helpful, friendly, and useful; it is always there, waiting to be used; it makes your lists flow with ease, even if you use comma, after comma, after comma; and it can help separate a run-on sentence.