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diff --git a/src/server/jackey.h b/src/server/jackey.h
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+/*
+  Copyright 2014-2015 David Robillard <http://drobilla.net>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+/**
+   The supported event types of an event port.
+
+   This is a kludge around Jack only supporting MIDI, particularly for OSC.
+   This property is a comma-separated list of event types, currently "MIDI" or
+   "OSC".  If this contains "OSC", the port may carry OSC bundles (first byte
+   '#') or OSC messages (first byte '/').  Note that the "status byte" of both
+   OSC events is not a valid MIDI status byte, so MIDI clients that check the
+   status byte will gracefully ignore OSC messages if the user makes an
+   inappropriate connection.
+*/
+#define JACKEY_EVENT_TYPES "http://jackaudio.org/metadata/event-types"
+
+/**
+   The type of an audio signal.
+
+   This property allows audio ports to be tagged with a "meaning".  The value
+   is a simple string.  Currently, the only type is "CV", for "control voltage"
+   ports.  Hosts SHOULD be take care to not treat CV ports as audibile and send
+   their output directly to speakers.  In particular, CV ports are not
+   necessarily periodic at all and may have very high DC.
+*/
+#define JACKEY_SIGNAL_TYPE "http://jackaudio.org/metadata/signal-type"
+
+/**
+   The name of the icon for the subject (typically client).
+
+   This is used for looking up icons on the system, possibly with many sizes or
+   themes.  Icons should be searched for according to the freedesktop Icon
+   Theme Specification:
+
+   http://standards.freedesktop.org/icon-theme-spec/icon-theme-spec-latest.html
+*/
+#define JACKEY_ICON_NAME "http://jackaudio.org/metadata/icon-name"
+
+/**
+   Channel designation for a port.
+
+   This allows ports to be tagged with a meaningful designation like "left",
+   "right", "lfe", etc.
+
+   The value MUST be a URI.  An extensive set of URIs for designating audio
+   channels can be found at http://lv2plug.in/ns/ext/port-groups
+*/
+#define JACKEY_DESIGNATION "http://lv2plug.in/ns/lv2core#designation"
+
+/**
+   Order for a port.
+
+   This is used to specify the best order to show ports in user interfaces.
+   The value MUST be an integer.  There are no other requirements, so there may
+   be gaps in the orders for several ports.  Applications should compare the
+   orders of ports to determine their relative order, but must not assign any
+   other relevance to order values.
+*/
+#define JACKEY_ORDER "http://jackaudio.org/metadata/order"