Parameters

 Keyword  Position  Type        Description
 -------  --------  ----        -----------
 MODEL       1      UNIV        Data object to contain
                                spectral model.
           GLOBAL.FIT_MODEL (Default model dataset)
 OVER        2      LOGICAL     Override with new model
                                spec?
     Hidden default = NO
 SPEC        3      CHAR        String containing model
                                specification.
 VALS        4      CHAR        String containing parameter
                                value and/or limits.
 RESTART     -      LOGICAL     Reset parameter values and
                                limits of existing model
     Hidden default = NO
 GEN         -      CHAR        Model class (SPEC,STAT etc).