> .SP (or the groff request .sp) adds the current linespace (\n[.v]) to
> the requested distance when | is used, for which compensation needs
> to be applied:
Wording like this somewhat obscures the point.
.sp |d, where d is some vertical distance, provides that much space
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On Wed, Nov 10, 2021, Douglas McIlroy wrote:
> > .SP (or the groff request .sp) adds the current linespace (\n[.v]) to
> > the requested distance when | is used, for which compensation needs
> > to be applied:
>
> Wording like this somewhat obscures the point.
>
> .sp |d, where d is some vertical
