[oXygen-user] oXygen Author: Restrict from creating non-valid content?

Hello! Is it possible to restrict the Author view in oxygen from creating non- valid content? Meaning, it would only allow insertion of the elements shown in the drop down list, etc to avoid writers not familiar with the DTD to still provide content without errors? (Yes, I know it warns for errors, but restricting use is better than warning when something has already gone wrong) Br, Jan -- Jan Nylund Senior System Designer Citec Information Oy Ab