Masks
Masks are a critical component of any layer based texturing system. Masks let you choose where on the model your layers should appear, which can be achieved in numerous ways, including using procedural effects, texture painting, image textures and much more.
This section of the documentation is dedicated to explaining how and why to use masks more generally, while also covering the masks that are available in PBR Painter.
Introduction to Layer Masks
The video below introduces layer masks generally, and explains the masking system used in PBR Painter. With this video you should be able to understand the concepts behind masking and also be able to implement masks into your own PBR Painter workflow.