Id,XSysCmd?,Head?, ((<TEXT>|Symbols| ((Acronym|BookTitle|VoiceEmphasis|Location|Not|Parameter|Term| Variable))| ((Superscript|Subscript))| ((Link|CrossReference))| ((VoiceComputer|Cursor|VoiceDisplay|Keycap|Softkey|VoiceUser))| ((Footnote|EquationInLine|GraphicInLine|FillInBlank)))*)