David,

At 10:23 AM 3/9/99 -0700, you wrote:

>One minor addition, because this was presented as the definitive 
>answer and I wouldn't want it to be anything less, is that when the CHAIN or 
>SETLL opcode is used to test for existence prior to a write consider using 
>the BLOCK(*YES) keyword.  This will help ensure you actually get the 
>cheapest solution, and potentially makes more difference than a 
>SETLL over CHAIN.

 Where is this keyword specified?  

 -mark

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