ARGUMENT_LIST_LENGTH

 The  ARGUMENT_LIST_LENGTH  function  returns  an  integer  value
 representing  the  number  of  arguments  in  a  variable-length
 parameter list that was created using the LIST attribute.


 Syntax:

    ARGUMENT_LIST_LENGTH( parameter-name )


 The  'parameter-name'  argument  specifies  the  name   of   the
 parameter declared with the LIST attribute.

 When creating a variable-length parameter list,  you  can  place
 the  LIST attribute on only the last formal parameter.  When you
 call  the  routine,  you  can  specify  any  number  of   actual
 parameters,  or  arguments,  that  correspond to the last formal
 parameter declared with LIST.