CANVAS_DEBUG_NAME (group, "ghost region");
group->set_position (ArdourCanvas::Duple (initial_pos, 0));
base_rect = new ArdourCanvas::Rectangle (group);
CANVAS_DEBUG_NAME (base_rect, "ghost region rect");
base_rect->set_x0 (0);
CANVAS_DEBUG_NAME (group, "ghost region");
group->set_position (ArdourCanvas::Duple (initial_pos, 0));
base_rect = new ArdourCanvas::Rectangle (group);
CANVAS_DEBUG_NAME (base_rect, "ghost region rect");
base_rect->set_x0 (0);