CHANGED:  Aliases
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     Illegal aliases:  Previous versions of CA-Clipper accepted database
     aliases that were not valid CA-Clipper identifiers.  These aliases were
     then inaccessible.  CA-Clipper now detects illegal characters in the
     alias and produces an EG_BADALIAS error.

     Duplicate aliases:  Previous versions of CA-Clipper did not generate an
     error when a duplicate alias was specified.  CA-Clipper now generates an
     EG_DUPALIAS error if you attempt to create an alias identifier that is
     already in use.