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This page is about the "API Reference" proposal for schema.org. The proposal is in a PDF; see attached file.
APIReference schema.org proposal
This proposal is a collaborative work towards a schema for Application Programming Interface (API) reference documentation. It defines a use of several properties of Thing and CreativeWork, Article, and TechArticle for use with API reference documentation. It defines a class APIReference with four properties.
Proposal PDF: File:Schema.org APIReference v2.7.pdf