dotted notes

[Michiel Lange]

Attached a 7-measure example in .ly format to show what I mean ;-)

In the case of multi-voice polyphony on a stave dotted notes get all 
their dots precisely below each other on a single line. In most cases 
this looks best, but sometimes it makes a dot 'float' and almost cause a 
collision with the beam of the next note.

In the documentation I found something to solve it, but frankly, I don't 
get how it should be solved
This is the link to the documentation I try to understand:
http://lilypond.org/doc/v2.6/Documentation/user/out-www/lilypond-internals/DotColumn.html#DotColumn

I am using 2.6.3 at this moment on windows, but also on linux. Haven't 
tried if the output is the same on linux, but I expect nothing else.
The case of the floating dot is seen in measures 1 and 4

There's also a smaller problem with the 8th rest in measure 2 and 6, 
those should go down as they will be hardly readable on their current 
spot. I want those rests on the same heigth as the notehead for the 'c' 
(between the 3rd and 4th line)

Anyone with suggestions how I can solve it?

Thanks,
Michiel

\version "2.6"

\header
{
        title="example"
}

music = \new Voice \relative c'' { 
        \key as \major
        \time 4/4
        << { <ges' aes>2. \sf aes4 (
                aes2 bes4. des8
                es2. ) <f, aes>4 }
        \\ { bes,4. ( es8 aes,4 ) c4
                des4. r8 <aes' des,>4. r8
                <es aes>2. aes,4 }
        >> 
        << { <ges' aes>2. \sf <f aes>4 } \\ { bes,4. ( es8 aes,4 ) aes4 } >>
        << { <ges' aes>2. \sf aes4 (
                aes2 bes4. f'8
                es2. ) } 
        \\ { bes,8 ( c8 des8 es8 aes,4 ) c4
                des4. r8 g4. r8
                <es aes>2. }
        >> r4
        }

\score
{
        \music

        \layout {}
}