I find it a bit curious when drawing on a mask over a photo to utilize the mask for "content awareness", that you have to invert the mask manually and also that a mask mode icon is not in the photo/content aware Info bar.

I think all the examples shown to date involve drawing on the mask around an area (or areas) of the photo behind the mask, followed by inverting the mask.

?? Couldn't Xara, after the user finishes drawing, simply invert the mask automatically if it detects a photo since it seems 99 out of 100 time the user will be doing manually anyway ??

It would mean one less step and make the feature more intuitive and "Xara-like". ??