Not quite. You can put any manner of html tag in your message's body, but you can not use HTML tags in any of the other fields. UltraBoard codes and other such things don't work, but more often than not, an UltraBoard code is just the same as an HTML tag only with brackets () instead of ... whatever- they-ares (<>). Anyway, please do spruce up your messages with html stuff. It's always a nice break from the letter by letter monotony.
Colons appear in the message dialog box when you try to followup up on a message to indicate that those lines are quoting the previous document. If you don't like them, find the nifty little key marked 'delete' on your keyboard and make them go away.
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This script is a rather heavily modified Perl script originally based on the WWWboard script created by Matt Wright. The WWWboard scripts are are free to anyone who wishes to use them and you can get them as well as other scripts at: http://worldwidemart.com/scripts/. Enjoy!