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Get/Set the boundaries for scoping key values in the controlling order.
METHOD OrderScope ( kScope, uValue ) CLASS BtTable
<kType> A number specifying the top (TOPSCOPE) or bottom (BOTTOMSCOPE) boundary.
<uValue> (Optional) The top or bottom range of key values that will be included in the controlling order's current scope.
ARRAY Current value of the Scope
<uValue> must be an expression that matches the data type of the key expression in the controlling order If the current order consists of more than 1 segment, an array of values can be specified. Specifying <uValue> as NIL has the special effect of resetting the specified scope to its original default. The default top range is the first logical record in the controlling order, and the default bottom range is the last logical record. Omitting <uValue> will return the current scope and change nothing
The range of values specified using BtTable:OrderScope() is inclusive. In other words, the keys included in the scope will be greater than or equal the top boundary and less than or equal to the bottom boundary.