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punctuation, it seems to me, is one of those tricksy things that the more you think about it the more you can't do it (except if you're brilliant and J R R Tolkien and then you know everything anyway so you don't count).
i once found myself lost in the middle of a huge manuscript, two days before the final deadline, re-punctuating everything because i'd convinced myself I needed to get more semi-colons in. don't ask me why. i don't know—it's insane (and i don't even like semi-colons)—it had a lot to do with thinking semi-colons are what clever people use. And because a critic who lives inside my head says horrid things, like "ah yes, what a shame. and it would have been such a lovely book if only she'd... (fill in the blank)."
if you find yourself in a Punctuation Bog like this, all i can say is, you need to GET OUT of there right this instant, run into the fresh air and the sunlight and talk to a sensible friend and only come back to your manuscript when you're fully in the real world and back in your right mind and have just stopped it.
and once you've done that, read something like this—a very helpful old typsetting saying:
"Set type as long as you can hold your breath without getting blue in the face. Then put in a comma.
When you yawn, put in a semicolon.
When you clear your throat, put in a period.
When you want to sneeze, that's time for a paragraph"
and here is a completely beautiful piece of typesetting to close this punctuation posting with.
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