On Wed, 23 Feb 2022 14:21:05 +0000, Seymour J Metz wrote:

>> diff/patch is more flexible; no 73-80 dependency.
>
>In simple cases I can see that, but what happens when blocks of code repeat? 
>Sometimes you need both a screwdriver and a hammer.
>
Or when a sizeable block of code is moved.  I know of no downdate
tool that handles that elegantly, such as by generating Edit commands.

-- 
gil

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