Silvio Weiland skryf:
>
> Hi mutex-world,
>
> Could somebody explain the Preamble command "Space", because I don't
> know how the settings for spacing exactly work. (The matter is
> me...Sorry?) Also with a lot of trial and errors I cann't catch the
> mechanism. Although with a little LUCK I got reasonable results, but
> there's no sense. I think there's a logical prinzip, which I want to
> understand.
It's like chess. There is no LUCK, it is fully deterministic, but
it may be just too hard to work out, so it feels like LUCK.
PMX does many little adjustments to vertical spacing to compensate
for things that stick out from the staff. Then it tells TeX to
\eject, which means that the difference between what has already
been set and the planned page height is distributed evenly on the
page. (Exception: if the page is less than about half full, the
music remains at the exact height that it already has.)
You just can't predict manually what the exact distance between
staves will be.
The "Space" command does further little adjustments on top of what
PMX already has done, but the result is only predictable relative to
what would happen by default. E.g. in style "SATB4" I sometimes put
Space: 1 1 1 -3
to get more space between the staves at the expense of the interstaff
distance.
As long as the total adjustments add up to 0, you should get precisely
what you asked for, relative to a score that uses "Space: 0". You have
to take into account how many there are of each gap: in the above case
the total adjustment in fact adds up to 3 because the last -3 will be
ignored (whitespace below the last staff). If there are four systems
then
Space: 1 1 1 -4
adds to 0 over the whole page.
If the adjustments do not add to 0, it becomes much trickier to say
exactly what will happen (but not impossible if you're good at math).
If they add to more that the amount of whitespace available, you may even
find that an extra page is made by MusiXTeX. I get around this problem
by supplying a larger \pageheight to MusiXTeX than what I tell PMX.
Hope (not very confidently) this helps.
Dirk
