Short description
When migrating to 1.9.3 I had a problem with the instructions in README.migration.
It would be more clear to change
moin --config-dir=/path/to/config_dir --wiki-url=wiki.example.org/ migration data
to
moin --config-dir=/path/to/dir/of/wikiconfig.py --wiki-url=wiki.example.org/ migration data
(The wiki does not have a config dir in /etc/, as might be usual. So there's a config dir in the python code, but that's not the right dir.)