A new version of the ArcGIS Metadata Toolkit is now available for download. This version of the Toolkit documents how to create and share custom metadata styles that use the validation capabilities provided in the ArcGIS metadata editor with ArcGIS 10.1 SP1 for Desktop.
Customizations that change how you view and export metadata, validate metadata using an XML schema, and reduce the number of pages available in the ArcGIS metadata editor require no programming. However, the Toolkit also provides the complete source code for the metadata editor’s pages if you want to change how they work. The documentation walks you through the process of creating a custom page and adding it into the ArcGIS metadata editor, modifying the contents of a drop-down list, and changing the validation rules associated with pages in the ArcGIS metadata editor.