+ seek_prev_frame.$(EXT) \
+ duck_position_icon.$(EXT) \
+ duck_vertex_icon.$(EXT) \
+ duck_tangent_icon.$(EXT) \
+ duck_radius_icon.$(EXT) \
+ duck_width_icon.$(EXT) \
+ duck_angle_icon.$(EXT) \
+ show_grid_icon.$(EXT) \
+ snap_grid_icon.$(EXT) \
+ onion_skin_icon.$(EXT)