I'm hoping a parent might chime in. In general, if the guidelines don't prohibit something it should be allowed. Keep in mind the phrases, "in general" and "should be."
Market Force does tend to have some of the better guidelines, redundant as all hell but better. When in doubt you can shoot an email to the Help Desk. They are good about responding in a reasonable length of time and won't chew you out for asking questions.
Equal rights for others does not mean fewer rights for you. It's not pie.
"I prefer someone who burns the flag and then wraps themselves up in the Constitution over someone who burns the Constitution and then wraps themselves up in the flag." -Molly Ivins
Never try to teach a pig to sing. It's a waste of your time and it really annoys the pig.