User interface > Transformation of groups of files > Transformation manager > Transformation options
The Config button opens a small editor, in which you can write configuration parameters for the transformations.
In principle, there are two ways in the transformation manager to transform the source files:
1. N:N: each source file is mapped to a different target
2. N:1:. all files are mapped into a single target file
There are different sets of options depending on, whether an N:N or an N:1 transformation is intended
Log-file
Notwithstanding the way of the transformation, however, a log-file in which the actions and reports of the transformations are recorded can be determined. Such a log-file can contain more information than the messages reported on the results page.