man.th.extra2.suppress — Suppress extra2 part of header/footer?
If the value of
non-zero, then the
extra2 part of the
.TH title line header/footer is suppressed.
The content of the
extra2 field is usually
displayed in the left footer of the page and is typically "source"
data, often in the form
for example, "GTK+ 1.2" (from the