Slots & Mask

The Slots tab in the Tool Shelf.

Slot

The combination of images associated with UV maps is called “slots”.

Painting Mode
ToDo.
Canvas Image
ToDo.
Available Paint Slots

A List Views & Presets of slots. To activate a certain slot to use it for paint a just LMB click on it. Clicking on a slot will also display the slot image in the UV/Image editors, if any are open.

Add/Remove Texture Paint Slot
ToDo.
Blend Type
ToDo.
UV Map
ToDo.
Save All Images
ToDo.

Mask

The mask can be deactivated by the checkbox in the header.

UV Map
ToDo.
Stencil Image
ToDo.
Visualization
ToDo.
Invert Stencil (black/white icon)
Inverts the mask.