symbol 20091104, MC: this needs work and will most probably change 2014-03-31: We would like to have a deeper analysis of 'mark' and 'sign' in the future (see https://code.google.com/p/information-artifact-ontology/issues/detail?id=154). 2014-03-31: We would like to have a deeper analysis of 'mark' and 'sign' in the future (see https://github.com/information-artifact-ontology/IAO/issues/154). An information content entity that is a mark(s) or character(s) used as a conventional representation of another entity. PERSON: James A. Overton PERSON: Jonathan Rees a serial number such as "12324X" a stop sign a written proper name such as "OBI" based on Oxford English Dictionary symbol information content entity information content entity pending final vetting The Ontology of Medically Related Social Entities