Fill concave edges loops

When trying to fill a concave edge loop it adds additional faces where they are not required. Is there a proper way to stop it doing this or will I have to add a few edges (inside the area to be filled) manually then do it in several parts?

Attachments


This should answer your question:

http://mediawiki.blender.org/index.php/FAQ/Modelling/Mesh#Why_are_there_additional_edges.2Ffaces_created_on_subdivision.3F

Werner