SET SCOPE
 Change the top and/or bottom boundaries for scoping key values in the
 controlling order
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 Syntax

     SET SCOPE TO [<expNewTop> [, <expNewBottom>]]

 Arguments

     <expNewTop> is the top range of key values that will be included in
     the controlling order's current scope.  <expNewTop> can be an expression
     that matches the data type of the key expression in the controlling
     order or a code block that returns the correct data type.

     <expNewBottom> is the bottom range of key values that will be
     included in the controlling order's current scope.  <expNewBottom> can
     be an expression that matches the data type of the key expression in the
     controlling order or a code block that returns the correct data type.

     Note:  If <expNewBottom> is not specified, <expNewTop> is taken for
     both the top and bottom range values.

 Description

     SET SCOPE, when used with no arguments, clears the top and bottom
     scopes; this is equivalent to ORDSCOPE(0, NIL) followed by ORDSCOPE(1,
     NIL).  If <expNewTop> is specified alone, SET SCOPE sets the top and
     bottom scope to the indicated value (i.e., ORDSCOPE(0, <expNewTop>)
     followed by ORDSCOPE(1, <expNewTop>).  If both <expNewTop> and
     <expNewBottom> are specified, SET SCOPE sets the top and bottom scope as
     indicated (i.e., ORDSCOPE(0, <expNewTop>) followed by ORDSCOPE(1,
     <expNewBottom>).  Refer to the ORDSCOPE() function for more information.

 Examples

     .  The following example illustrates the SET SCOPE command:

        USE Inventor NEW
        INDEX ON PartNo TO Parts

        SET SCOPE TO 1750, 2000
        // Only part numbers between 1750 and 2000 will be used

 Files   Library is CLIPPER.LIB.