ekkehard wrote:

  

is there an information which parts of the documentations are changed ?
which chapters of logback user manual from 0.9.9 to 0.9.11 ?
    

The documentation changes in two ways:

1) to reflect changes in the code, including bug fixes and enhancements,
2) improved wording (clearer or more explanations)

We don't keep a registry of documentation changes.