(Fwd) Page spacing question

[Thomas Scharkowski]

Hello list,

nobody answered to my question below until now, maybe it's to 
trivial?
Perhaps someone could point me where to look?

Thank you,
Thomas

--
in LilyPond 2.7.12 Windows native I set annotatespacing=##t and 
notice a space following "headsep" which is not labeled. Can I access
this space somehow? I think this extra space was not there in 2.7.10
IIRC.

>From above I have:

topmargin
headsep
* unlabeled space *
Y-extent (of the Title)
next-padding
Y-extent (system one) 
next-space
next-padding
.. and so on