My question is this: what can you actually print? If you're aiming at a certain age group (young adult in my case) are there restrictions set as to what novels can include, so far as language, sex, drugs and violence. I have heard of publishers changing sections in novels they consider inappropriate, but is this just the personal choice of the publisher or is it governed by regulations, like film is? I'm aware there's no rating system like you get with films and games, but is there something behind the scenes? Obviously you can't publish stuff that is against national laws, such as inciting racism, but what about the areas I've stated above? Also, does the possibility of having to alter sections before publication generally put agents off, or, assuming the required changes are not drastic and fundamental, will they take on an author even if changes are required?