Character Entities

To support included MathML, the PubMed DTD references the combined HTML MathML entity set (see below) defined in XML Entity Definitions for Characters.

HTML/MathML Entity Set

<!ENTITY % xhtml1-lat1 PUBLIC "-//W3C//ENTITIES Latin for HTML//EN/" "xhtml1-lat1.ent">
<!ENTITY % xhtml1-special PUBLIC "-//W3C//ENTITIES Special for HTML//EN/" "xhtml1-special.ent">
<!ENTITY % xhtml1-symbol PUBLIC "-//W3C//ENTITIES Symbol for HTML//EN/" "xhtml1-symbol.ent">
<!ENTITY % html5-uppercase PUBLIC "-//W3C//ENTITIES uppercase aliases for HTML//EN/" "html5-uppercase.ent">
<!ENTITY % predefined PUBLIC "-//W3C//ENTITIES Predefined XML//EN/" "predefined.ent">
<!ENTITY % isobox PUBLIC "-//W3C//ENTITIES Box and Line Drawing//EN" "isobox.ent">
<!ENTITY % isocyr1 PUBLIC "-//W3C//ENTITIES Russian Cyrillic//EN" "isocyr1.ent">
<!ENTITY % isocyr2 PUBLIC "-//W3C//ENTITIES Non-Russian Cyrillic//EN" "isocyr2.ent">
<!ENTITY % isodia PUBLIC "-//W3C//ENTITIES Diacritical Marks//EN" "isodia.ent">
<!ENTITY % isolat1 PUBLIC "-//W3C//ENTITIES Added Latin 1//EN" "isolat1.ent">
<!ENTITY % isolat2 PUBLIC "-//W3C//ENTITIES Added Latin 2//EN" "isolat2.ent">
<!ENTITY % isonum PUBLIC "-//W3C//ENTITIES Numeric and Special Graphic//EN" "isonum.ent">
<!ENTITY % isopub PUBLIC "-//W3C//ENTITIES Publishing//EN" "isopub.ent">
<!ENTITY % isoamsa PUBLIC "-//W3C//ENTITIES Added Math Symbols: Arrow Relations//EN" "isoamsa.ent">
<!ENTITY % isoamsb PUBLIC "-//W3C//ENTITIES Added Math Symbols: Binary Operators//EN" "isoamsb.ent">
<!ENTITY % isoamsc PUBLIC "-//W3C//ENTITIES Added Math Symbols: Delimiters//EN" "isoamsc.ent">
<!ENTITY % isoamsn PUBLIC "-//W3C//ENTITIES Added Math Symbols: Negated Relations//EN" "isoamsn.ent">
<!ENTITY % isoamso PUBLIC "-//W3C//ENTITIES Added Math Symbols: Ordinary//EN" "isoamso.ent">
<!ENTITY % isoamsr PUBLIC "-//W3C//ENTITIES Added Math Symbols: Relations//EN" "isoamsr.ent">
<!ENTITY % isogrk3 PUBLIC "-//W3C//ENTITIES Greek Symbols//EN" "isogrk3.ent">
<!ENTITY % isomfrk PUBLIC "-//W3C//ENTITIES Math Alphabets: Fraktur//EN" "isomfrk.ent">
<!ENTITY % isomopf PUBLIC "-//W3C//ENTITIES Math Alphabets: Open Face//EN" "isomopf.ent">
<!ENTITY % isomscr PUBLIC "-//W3C//ENTITIES Math Alphabets: Script//EN" "isomscr.ent">
<!ENTITY % isotech PUBLIC "-//W3C//ENTITIES General Technical//EN" "isotech.ent">
<!ENTITY % mmlextra PUBLIC "-//W3C//ENTITIES Additional MathML Symbols//EN" "mmlextra.ent">
<!ENTITY % mmlalias PUBLIC "-//W3C//ENTITIES MathML Aliases//EN" "mmlalias.ent">