HelenOS sources

rbutton_iframe_r  232 uspace/lib/ui/src/rbutton.c 	    &center, rbutton_iframe_r, ui_fcircle_upleft);
rbutton_iframe_r  242 uspace/lib/ui/src/rbutton.c 	    &center, rbutton_iframe_r, ui_fcircle_lowright);