Specifies the interchange formats for font information, and the minimum subsets of that information required for interchange. Requires the property definitions as defined in ISO/IEC 9541-1. Establishes the minimum set of font properties that must occur within an ISO font resource. To accommodate the broad range of document and text processing functions found in office and publishing environments, it is anticipated that ISO font resources will contain more than the minimum number of font properties. Defined font resources are used in various document processing environments in which the RELAX NG Compact Syntax schema (ISO/IEC 19757-2) parsing algorithm is recognized. The format of font resource information as defined is specified in RELAX NG Compact Syntax for consistent generation of font resources for use in the processing environments.