That is why I pinged David. In the meantime, if you haven’t already done so, please refer to:
- G'MIC - GREYC's Magic for Image Computing: A Full-Featured Open-Source Framework for Image Processing - Image and Data Viewers
- G'MIC - GREYC's Magic for Image Computing: A Full-Featured Open-Source Framework for Image Processing - List of Commands
- or anything else in the reference documents
There is also reference content in the tutorials and the G’MIC files themselves.