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     See ◄Introduction to switches►
 
     Normally sorts are optimized to make use of all free memory. This is
     faster for small sorts. However, when performing a sort on data which
     is many times the size of free memory, this optimization requires
     that you have free disk space which is at least twice the size of the
     data records being sorted.
 
     Setting the B2 switch to on optimizes disk usage during a sort so
     that you only require free disk space which is roughly equal to the
     size of the data being sorted. Moreover, because less paging to disk
     occurs, it speeds up large sorts.
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