The semicolon. From what I can gather it separates two complete thoughts when it's not clear if you should use a coma or a period. It's up to the writer's discretion how much he or she wants between those thoughts, right? Speak, oh wise one.
Wow, a real difficult question. However; you must decide. I have postponed a lot of story writing due to the complexity of the semicolon. OK, everybody, it's time to take a 'colon' break; I suggest you listen to Colin Hay and his song; 'Overkill'.