Hi there CL-USER> (ql:quickload "mcclim") To load "mcclim": Load 1 ASDF system: mcclim ; Loading "mcclim" .............. ("mcclim") CL-USER> (in-package :clim-user) #<PACKAGE "CLIM-USER"> CLIM-USER> (defvar *c*) *C* CLIM-USER> (setf *c* (make-instance 'standard-application-frame)) #<STANDARD-APPLICATION-FRAME {1006FD6F63}> CLIM-USER> *c* #<STANDARD-APPLICATION-FRAME {1006FD6F63}> CLIM-USER> Now I can use slot-value (slot-value *c* slot-name) can you give me all slot-names of standard-application-frame class That's the point of all of it. Be good to me. I need that slot names.