479
Oh so that's what its for rule
(lemmy.ml)
Be sure to follow the rule before you head out.
Rule: You must post before you leave.
They can also be used as a super comma; because sometime you make a longer sentence, or a sentence with complex clauses.
I'm sorry, but the example in your comment is nonstandard usage. The part after the semicolon would typically be an independent clause, whereas the "because" marks yours as a dependent clause.
There are still comma-like uses though. The major one I can think of is as a separator in a list where each element is long, possibly containing commas of its own.