Information technology — Multimedia content description interface — Part 5: Multimedia description schemesAMENDMENT 3: Improvements to geographic descriptor1.1 Organization of the documentThis International Standard specifies a metadata system for describing multimedia content. This document specifies the Multimedia Description Schemes (MDS) description tools (Description Schemes, Descriptors, and datatypes) that comprise ISO/IEC 15938-5. The following set of subclauses are provided for each MDS description tool, where optional subclauses are indicated as (optional):• Syntax: specifies the normative syntax of the description tool using Description Definitio