alternate anchor angles arc at atomic background bezier bidirectional bitmap bold bottom bus bus_alias bus_entry center circle clock clock_low color comment company convert dash dash_dot data date default diameter dot edge_clock_high effects end extends fill font footprint global_label hide hierarchical_label hint_alt_swap hint_pin_swap id image input input_low inverted inverted_clock in_bom iref italic junction justify kicad_sch kicad_symbol_lib label left length lib_id lib_name lib_symbols line members mid mirror name no no_connect non_logic none number offset on_board open_collector open_emitter outline output_low unconnected output page paper passive path pin pin_del pin_names pin_numbers pin_merge pin_rename polyline portrait power power_in power_out property property_del pts radius rectangle reference required rev right scale shape sheet sheet_instances size solid start stroke symbol symbol_instances text thickness title title_block top tri_state type unit unspecified uuid value version width wire xy x y yes