You're correct, but the WG should decide which sentence will change.If it's a MUST then <http://atompub.org/2005/01/27/draft-ietf-atompub-format -05.html#rfc.section.4.15.2.p.3> needs to be adjusted.It's a MUST, and not an editorial change.05-C05, 4.15.3 processing model "If the value of "type" begins with "text/" the content of atom:content MUST NOT contain child elements." See 4.15.2: so is this a SHOULD or a MUST?