| CMAny | Content model any node. |
| CMBinOp | Content model Bin-Op node. |
| CMLeaf | Content model leaf node. |
| CMNode | A content model node. |
| CMStateSet | This class is a very simple bitset class. |
| CMUniOp | Content model Uni-Op node. |
| DFAContentModel | DFAContentModel is the derivative of ContentModel that does
all of the non-trivial element content validation. |
| MixedContentModel | MixedContentModel is a derivative of the abstract content model base
class that handles the special case of mixed model elements. |
| SimpleContentModel | SimpleContentModel is a derivative of the abstract content model base
class that handles a small set of simple content models that are just
way overkill to give the DFA treatment. |