# Archived Design Documents Documents may appear in the `rfcs/archived` directory for one of two reasons: 1. The document describes a feature or extension that has been deprecated and then removed. 2. The document describes a proposed feature or extension that has not (ultimately) become a fully supported feature. Design documents that appear in the `rfcs/archived` folder should describe a reason for archiving. Documents may remain in this folder indefinitely to serve as a source of information about previous proposals and features.