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HELP FOR: grlib
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CALLING SEQUENCE:  grlib ( objectLib, [overwrite] ):

PARAMETERS:  objectLib   - name of a GRTensorII object library
             overwrite   - (optional) parameter indicating new library
                           is permitted to redefine existing objects

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SYNOPSIS:

- grlib() loads a GRTensorII object library. For Release 1.50, the
  GRTensorII object libraries are:

                basislib.m, invar.m, dinvar.m

  All of these libraries currently are auto-loading. That is, if a
  request is made to calculate any of the objects in these libraries,
  they will be loaded automatically.

  Note that older versions of GRTensorII had additional libraries,
  diffop.m, grvector.m, and killing.m. These libraries have been
  incorporated into the standard GRTensorII library, grii.m. The
  old cmscalar.m has been incorporated into the invar.m library.

- grlib() will not load the library if this causes an existing object to be 
  re-defined unless the second parameter is present. For instance, if the
  library defines a tensor R(dn,dn), the default action is not to load the
  library.

- For information on additional object libraries see ?grt_objects.

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EXAMPLES:

> grlib( dinvar );
Differential Invariants.
Last Modified May 12, 1994.
Done

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SEE ALSO:  grt_objects, grt_operators, grt_basis, grt_invars, grdef.
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