--- /dev/null
+Copy Tags and Digital Bookplates
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Copy tags will allow staff to apply custom, pre-defined labels or tags
+to copies. Copy tags are searchable in both the staff client and public
+catalog. This feature was designed to be used for Digital Bookplates to
+attach donation or memorial information to copies, but may be used for
+broader purposes to tag items.
+
+Each copy tag can either be publicly-visible or visible only to staff.
+Copy tags also have types that can be used for restricting catalog
+searches on copy tags to particular types.
+
+Copy tags are displayed in the copy table in the record summary page in
+the public catalog, and a new library setting can be used to add
+a "Digital Bookplate" search field. Copy tags can also be used
+as a search filter, e.g.,
+
+ * `copy_tag(bookplate, jane smith)`: search for records that have a
+ copy tag of type `bookplate` whose value contains `jane smith`.
+ * `copy_tag(*, jane smith)`: search for records that have a
+ copy tag of any type whose value contains `jane smith`.
+
+All staff-side interfaces related to copy tags exist only in the web
+staff client. There are two new administration interfaces for managing
+copy tags and copy tag types. The copy editor now has a `Copy Tags`
+button for applying copy tags to copies; that interface can also be
+used to create new copy tags on the fly. Furthermore, the copy buckets
+interface now has an `Apply Tags` action for assigning tags to groups
+of copies.
+
+Permissions
++++++++++++
+
+Two new permission are included:
+
+ * `ADMIN_COPY_TAG_TYPES`: required to create a new tag type under
+ Server Administration->Copy Tag Types
+ * `ADMIN_COPY_TAG`: required to create a new tag under
+ Local Administration->Copy Tags
+
+The existing permission `UPDATE_COPY` controls whether or not a user
+can link copies to tags.
+
+Library Settings
+++++++++++++++++
+A new library setting, "Enable Digital Bookplate Search", controls
+whether to display a "Digital Bookplate" field in the search index
+drop-downs in the catalog. A "Digital Bookplate" search will include
+all records that have a copy that matches the tag specified by the user.
+It should be noted that this library settings does not affect the
+display of copy tags on the catalog record summary page.