In a recent note, Mark Zelden said:

> Date:         Wed, 1 Feb 2006 09:01:27 -0600
> 
> Why not?  Why is changing a line or 2 of code and creating object code
> to be linked in a sysmod any better than zapping an instruction or 2?
> 
If the PTF consists of module replacements, APPLY REDO can be
used if necessary to recover from some errors.  If it contains
a ++ZAP, APPLY REDO is bound to fail.

-- gil
-- 
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