re: Post titles An interesting phenomenon. I attempted to use an obscure post title, 4F01, but the system won't allow the capital letter. It's not a particularly problematic issue, as it doesn't damage the reference. But ... well, why? Does 4F01 correspond to some markup, code, or command? I figure there is a logical reason, as opposed to a random bug that nobody has ever noticed before. But, still, it just seems strange. Unicode hex 4f01: 企 (Chinese, "enterprise") Interesting.