Indicates that subsequent assignments to field values specify the start of the range of rows to
include in the dataset.
Syntax:
procedure SetRangeStart;
Description:
Call SetRangeStart to put the dataset into dsSetKey state, erase any previous start
range values, and set them to NULL. Subsequent field assignments to the FieldValues
property indicate the actual set of starting values for a range.
After assigning start-range values to FieldValues, call
ApplyRange to activate the modified range.