+static const char *KEY_INTERFACE_WINDOW_RESTORE_ENABLED
+= "/apps/psensor/interface/window_restore_enabled";
+
+static const char *KEY_INTERFACE_WINDOW_X = "/apps/psensor/interface/window_x";
+static const char *KEY_INTERFACE_WINDOW_Y = "/apps/psensor/interface/window_y";
+static const char *KEY_INTERFACE_WINDOW_W = "/apps/psensor/interface/window_w";
+static const char *KEY_INTERFACE_WINDOW_H = "/apps/psensor/interface/window_h";
+
+static const char *KEY_INTERFACE_WINDOW_DIVIDER_POS
+= "/apps/psensor/interface/window_divider_pos";
+
+static const char *KEY_INTERFACE_TEMPERATURE_UNIT
+= "/apps/psensor/interface/temperature_unit";