Model for the <textual-form> element
<!ENTITY % textual-form-elements "%emphasis.class; | %inline-display-noalt.class; | %math.class; | %phrase-content.class; | %subsup.class;" >
bold | italic | monospace | overline | roman | sc | strike | underline | inline-graphic | private-char | mml:math | named-content | styled-content | sub | sup
common3.ent