<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 4.0//EN">
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
Why would I use one or the other? Is the first one more forgiving?
Will IE 6 render the second one correctly if I have a nonstandard tag such as marginheight=0 for netscape?