Exports extension points for the http://purl.org/vcml/text/1.0 namespace while decoupling the Text namespace from the extension points so that extension elements do not need to be affected by changes to the other elements in the Text namespace. Exports extension points for the http://purl.org/vcml/text/1.0 namespace while decoupling the Text namespace from the extension points so that extension elements do not need to be affected by changes to the other elements in the Text namespace. Abstract element which can be replaced using substitution groups. This element enables block-level elements from other namespaces to be incorporated into the Text namespace. An abstract element which can be replaced using substitution groups. This element enables inline level elements from other namespaces to be incorporated into the Text namespace. An abstract element which can be replaced using substitution groups. This element enables inline level elements with mixed content from other namespaces to be incorporated into the Text namespace. The base type for any element which provides a block style extension to the Text namespace. The base type for any element which provides inline style extensions to the Text namespace. This base type does not allow text in the extension element. The base type for an element which provides inline style extensions to the Text namespace. This base type allows text as a direct child of the extension element.