WordPress: Plugin: Subordinate Post Type Helpers

This plugin provides a number of helpers functions to aid in the creation of subordinate relationships between two post types, one-to-many relationships in which posts of one type are children of another. (For example, a Job Listing might have a Company as a parent; a Meeting might have a Group.) With this plugin activated, developers can easily write code in their plugins and themes to register two post types related in this manner.