visible_modules

   Modules that SCA can examine when performing a FIND or INSPECT
   command. The current library list tells you what modules are
   visible. All modules in the first library in the library list
   are visible. Modules in the second library which are not in the
   first library are visible. Modules in the third library which are
   not in the first or second libraries are visible. Any module which
   is not visible is hidden.