recorded frames, all metadata about clips, and preferences set from the menus
(interpolation quality and cue point padding). If you quit Futatabi and
restart it (or you go down as the result of a power failure or the likes),
-it will remember all the state and frames for you.
+it will remember all the state and frames for you. As a special case,
+if you give */dev/null* in place of an input URL or file, you can keep using
+your workspace without getting any new frames added.
.. _basicui: