From W3C Wiki

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

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

Code schema.org proposal

This proposal is a collaborative work towards a schema for computer source code samples. It defines a use of several properties of Thing and CreativeWork for use with source code. It defines a class Code with five properties.

Proposal PDF: File:Schema.org Code v2.5.pdf