The semicolon has been... «Eats, Shoots & Leaves: The Zero Tolerance Approach to Punctuation»

The semicolon has been rightly called "a compliment from the writer to the reader". And a mighty compliment it is, too. The sub-text of a semicolon is, "Now this is a hint. The elements of this sentence, although grammatically distinct, are actually elements of a single notion. I can make it plainer for you – but hey! You're a reader! I don't need to draw you a map!"