🚀 go-pugleaf

We use -ms along with a setup file that contains our local macros.
I modified the way the bottom title macro works, like so:

X.	\" BT - bottom title, redefine of -ms BT
X.de BT
X.nr PF \\n(.f
X.nr PX \\n(.s
X.ft 2
X.ps \\n(PS
X.lt \\n(LTu
X.po \\n(POu
X.if \\n(TM .if \\n(CT \{\
X.	tl ''\\n(PN''
X.	nr CT 0
X.\}
X.	\"this is my own footer stuff next four lines
X.if o .tl '\\*(F4'\\*(F5'\\*(F6'
X.if o .tl '\\*(F1'\\*(F2'\\*(F3'
X.if e .tl '\\*(F6'\\*(F5'\\*(F4'
X.if e .tl '\\*(F3'\\*(F2'\\*(F1'
X.ft \\n(PF
X.ps \\n(PX
X..

This allows us a two line footer, and makes it easier to define
the footer strings in the source file. Now, the problem.
How does -ms determine where to place the footer?

What we have now is too low on the page and we want to move it up some.
Initially, I thought it was done by the footer margin number
register, but changing it does not move the footer at all.
There are no spacing commands in .BT, and the when trap occurs
at -1i, so I would expect the titles in .BT to print out 1 inch
from the bottom of the page, but they don't. Somewhere, some
space is being added between the location of the trap and
the first line printed by .BT. Would anyone care to tell
me where I can find this in the macro and change it?

				Thanks, TomC
---
                    Regards, Tom Cianflone (tcianflone@gould.UUCP)
                           ...!{uunet,sun,pur-ee}!gould!tcianflone
                    ...!{allegra,ucf-cs}!uflorida!gould!tcianflone
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-- 
                    Regards, Tom Cianflone (tcianflone@gould.UUCP)
                           ...!{uunet,sun,pur-ee}!gould!tcianflone
                    ...!{allegra,ucf-cs}!uflorida!gould!tcianflone
                 Disregard header info. Email to above paths only.