| class  | HTMLDocument.HTMLReader.BlockAction | Action assigned by default to handle the Block task of the reader. | 
| class  | HTMLDocument.HTMLReader.CharacterAction | Action assigned by default to handle the Character task of the reader. | 
| class  | HTMLDocument.HTMLReader.FormAction | Action to support forms by building all of the elements
 used to represent form controls. | 
| class  | HTMLDocument.HTMLReader.HiddenAction | Action assigned by default to handle the Hidden task of the reader. | 
| class  | HTMLDocument.HTMLReader.IsindexAction | Action assigned by default to handle the Isindex task of the reader. | 
| class  | HTMLDocument.HTMLReader.ParagraphAction | Action assigned by default to handle the Paragraph task of the reader. | 
| class  | HTMLDocument.HTMLReader.PreAction | Action assigned by default to handle the Pre block task of the reader. | 
| class  | HTMLDocument.HTMLReader.SpecialAction | Action assigned by default to handle the Special task of the reader. |