On 2021-01-29, at 06:25:28, Peter Relson wrote:
> 
> As Keven Hall mentioned, If it were required that there be no crossing of 
> page boundary from TBEGINC through TEND, the principles of operation would 
> have said so.
> 
> There is no such requirement.
>  
It appears that the editorial rules for Principles of Operation
are stricter than those for Services.  Recently on IBM-MAIN you
defended the omission of any mention that certain services must
be invoked from below the bar.  If there is such a requirement,
might not a programmer expect that the Services Ref. would have
said so?

-- gil

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