!
 ! Grep a value in the state-vector of a LCM object
 !
 !  input  to  "grep": *lcm object*
 ! output from "grep": *nb_mix*
 !
 PARAMETER GEOM ::
    ::: LINKED_LIST GEOM ; ;
 MODULE GREP: END: ;
 INTEGER   nb_mix ;
 
 GREP: GEOM :: GETVAL 'STATE-VECTOR' 7 >>nb_mix<< ;
  :: <<nb_mix>>  ;
 END: ;
 QUIT .