--- /dev/null
+Magic Folder user interface design
+==================================
+
+Scope
+-----
+
+In this Objective we will write the design document for how users can conveniently
+and securely indicate which folders on some devices should be magically linked to
+which folders on other devices.
+
+This is a critical usability and security issue for which there is no known perfect
+solution, but which will hopefully be amenable to a "good enough" trade-off solution.
+This document explains the design and justifies its trade-offs in terms of security,
+usability, and time-to-market.
+
+Tickets on the Tahoe-LAFS trac with the `otf-magic-folder-objective6`_
+keyword are within the scope of the user interface design.
+
+.. _otf-magic-folder-objective6: https://tahoe-lafs.org/trac/tahoe-lafs/query?status=!closed&keywords=~otf-magic-folder-objective6