title.char.mix

  #PCDATA | FootnoteRef | XRef | Abbrev | Acronym | Citation
  | CiteRefEntry | CiteTitle | Emphasis | FirstTerm
  | ForeignPhrase | GlossTerm | Footnote | Phrase | Quote
  | Trademark | WordAsWord | Link | OLink | ULink | Action
  | Application | ClassName | Command | ComputerOutput
  | Database | Email | EnVar | ErrorCode | ErrorName
  | ErrorType | Filename | Function | GUIButton | GUIIcon
  | GUILabel | GUIMenu | GUIMenuItem | GUISubmenu | Hardware
  | Interface | InterfaceDefinition | KeyCap | KeyCode
  | KeyCombo | KeySym | Literal | Markup | MediaLabel
  | MenuChoice | MouseButton | MsgText | Option | Optional
  | Parameter | Prompt | Property | Replaceable | ReturnValue
  | SGMLTag | StructField | StructName | Symbol | SystemItem
  | Token | Type | UserInput | Anchor | Author | AuthorInitials
  | CorpAuthor | ModeSpec | OtherCredit | ProductName
  | ProductNumber | RevHistory | Comment | Subscript
  | Superscript | InlineGraphic
  | InlineEquation