%isoamsc; — Added Math Symbols: Delimiters Character Entities
The %isoamsc;
parameter entity includes the ISO
character entities with the public identifier:
ISO 8879:1986//ENTITIES Added Math Symbols: Delimiters//EN
ISO and the W3C are cooperating to provide an official set of character entity references for XML. A description of this set is available at http://www.w3.org/2003/entities/iso8879doc/isoamsc.html