From W3C Wiki

This is an archived WebSchemas proposal TechnicalArticle for schema.org. See Proposals listing for more. Note: active schema.org development is now based at github

This page is about the "Technical Article" proposal for schema.org. The proposal is in a PDF; see attached file.

TechArticle schema.org proposal

This proposal is a collaborative work towards a Technical Article schema. It defines a use of several properties of Thing and CreativeWork, and Article for use with Technical Articles. It defines a class TechArticle with three properties, and a subclass, APIReference (with four properties).

Proposal PDF: File:Schema.org TechArticle v2.7.pdf