At least this is how it's defined in core/types_c.h

* CSV can contain dir-s and wildcards
* save trained model

The function makes wave correction of a stitched panorama.
Earlier it gave wrong results for panorama made from 1 frame.

added extra warning about the automatic parameter loading for traincascade application when the param.xml file already exists

Somebody forgot to add curly brackets

How this worked before, I do not know.