> Does anyone have a suggestion where I have to look for it and if it is not > there .. does somebody have experience with this issue, where to put it and > how to define it? I mean, this is basically the reverse of the other layers. > Everything should be covered and only the pads (or parts of them) needs to be > open.
The mask is deduced from the pads and pins. The latest pcb allows you to specify a mask clearance, which is added around the pads and pins to determine the mask, but there is no separate mask. At least, not until you print the gerber files ;-)
