The artist would have an option (probably in the gamut masks docker) to add a mask to his current document and save it in the kra file. On reopening the document the mask is automatically selected, so the artist can continue her work.
What would be saved:
- Link to the mask
- Rotation angle from the selector
1, Is there a need for embedding the resource itself (the mask can be shared with others by exporting it in a regular bundle)? Is it practical and advisable to do it?