The more I think about it the more I think this thread and others like it in the future on other subjects, like grammar, will really help a lot of us new to writing.
I agree, Sky. Some writers use punctuation marks without understanding why they used them; others write without using any punctuation at all, because they don't understand how it's used ( but want to ). Others place punctuation arbitrarily, without realizing ( as I've said many times in critique )
that punctuation is the prose of poetry because it guides the reader in both interpretation while determining his/her breathe pauses.
Then others know EXACTLY what the hell they're doing, and break the rules perfectly. LOL!