mged> l brlcad_tcl__bot_and_io1.c
brlcad_tcl__bot_and_io1.c:  REGION id=1000 (air=0, los=100, GIFTmater=1) --
   u brlcad_tcl__all_arms_combo1.r
   u brlcad_tcl__rcc1.s
mged> bb temp_box brlcad_tcl__bot_and_io1.c
db_lookup(temp_box) failed: temp_box does not exist
db_string_to_path() of 'temp_box' failed on 'temp_box'
db_string_to_path failed for temp_box