callback method invoked by MarkupParser after parsing comment
callback method invoked by MarkupParser after parsing an elementm, between the elemStart and elemEnd callbacks
callback method invoked by MarkupParser after end-tag of element
callback method invoked by MarkupParser after start-tag of element
callback method invoked by MarkupParser after parsing entity ref
returns true is this markup handler is validating
This method should log the message given as argument somewhere as a side-effect
callback method invoked by MarkupParser after parsing PI
callback method invoked by MarkupParser after parsing text
class that handles markup - provides callback methods to MarkupParser. the default is nonvalidating behaviour