🚀 go-pugleaf

I've been trying to allocate integral multiples of line spacing
(vertical) to a picture environment in LaTeX; to suppress all extra
vertical spacing, I've tried setting the following style parameters to
zero:

\parskip
\topsep
\partopsep
\parsep
\itemsep

which covers all vertical spacing in paragraph mode and list-making
environments (at least the ones mentioned in the LaTeX manual).
Still, LaTeX insists on sneaking just a little bit of extra vertical
space in between the text and the picture environment.

Am I missing some style parameter?  If not, is there some way I can
coerce LaTeX into foregoing this annoying behavior?  Or is this yet
another case of LaTeX being too smart for its own good?  Inquiring
minds want to know.

Thanks,

Bryan
--
E. Bryan George, Ph.D.
Principal Electrical Engineer
Signal Processing Center of Technology
Lockheed Sanders, Inc.
Nashua, NH USA