+CONFIG_VARIABLE (bool, external_sync, "external-sync", false)
+CONFIG_VARIABLE (InsertMergePolicy, insert_merge_policy, "insert-merge-policy", InsertMergeRelax)
+CONFIG_VARIABLE (framecnt_t, timecode_offset, "timecode-offset", 0)
+CONFIG_VARIABLE (bool, timecode_offset_negative, "timecode-offset-negative", true)
+CONFIG_VARIABLE (std::string, slave_timecode_offset, "slave-timecode-offset", " 00:00:00:00")
+CONFIG_VARIABLE (std::string, timecode_generator_offset, "timecode-generator-offset", " 00:00:00:00")
+CONFIG_VARIABLE (bool, glue_new_markers_to_bars_and_beats, "glue-new-markers-to-bars-and-beats", false)
+CONFIG_VARIABLE (bool, midi_copy_is_fork, "midi-copy-is-fork", false)
+CONFIG_VARIABLE (bool, glue_new_regions_to_bars_and_beats, "glue-new-regions-to-bars-and-beats", false)
+CONFIG_VARIABLE (bool, realtime_export, "realtime-export", false)
+
+/* Video-settings are saved with the session and belong to the session.
+ * headless ardour could remote control xjadeo for example.
+ */
+CONFIG_VARIABLE (bool, use_video_file_fps, "use-video-file-fps", false)
+CONFIG_VARIABLE (bool, videotimeline_pullup, "videotimeline-pullup", true)
+
+/* These are GUI-only properties and should not be present in this
+ * context. There needs to be a new GUI-level session-scoped configuration
+ * variable header.
+ */
+CONFIG_VARIABLE (double, wave_amplitude_zoom, "wave-amplitude-zoom", 0.0)
+CONFIG_VARIABLE (uint16_t, wave_zoom_factor, "wave-zoom-factor", 2)