
          loadlibindex libfile Load the package library index of the
          library file libfile (which must have the suffix .tlib).
          Package library indexes along the TCLPATH are loaded
          automatically on the first demand_load; this command is
          provided to explicitly load libraries that are not in the
          path.  If the index file (with a .tndx suffix) does not
          exists or is out of date, it will be rebuilt if the user has
          directory permissions to create it.
