Re: "absolute" vertical position seems awfully relative

[Peter Schaffter]

On Mon, Jun 21, 2021, Dave Kemper wrote:
> But specify a macro package of -ms, -me, or -mm on the command line,
> and the results change: the text is now in noticeably different
> positions on the two pages.  The placement with all three macro
> packages is remarkably similar.
> 
> Why should a macro package change groff's concept of an absolute
> distance from the top of a page?

The mom macros don't exhibit the behaviour.  I wouldn't have thought
it possible.  The question isn't why should it, but how could it?
The only thing I can think of is that the .bp is triggering a macro
that changes the .vs.  That could result in different vertical
placements, but not, I think, "noticeable."

-- 
Peter Schaffter
https://www.schaffter.ca