by Julieanne Kost
To temporarily disable a layer or vector mask, Shift-click the mask icon in the Layers panel. For a Layer mask, simply clicking on the mask thumbnail in the Layers panel will enable it. For a Vector mask, you must shift -click the thumbnail again to enable it. You can also Control (Mac) / Right mouse (Win) -click on the mask in the Layers panel and choose to Enable or Disable the mask.