generic content portion description
A computing term for a description of the generic content portion, likely used in technical specifications or documentation.
In this standard, the generic content portion description defines the basic part of the data structure.
A compound of 共通 (common), 内容 (content), 部 (part), 記述 (description), and 部 (part). The exact derivation is uncertain; it appears to be a technical term coined for computing specifications.