5951: Mask Lakes
The Mask Lakes option allows you to specify whether shading should appear over any areas representing lakes or inland seas. CPT draws lakes and inland seas on top of the country boundaries, and so these boundaries appear within the lakes and seas themselves. If mask lakes option is on CPT will shade all lakes and inland seas in white so that the borders, and any colour shading will be eliminated. The option toggles the masking of the land on and off. A tick is indicated next to the menu \item when the masking option is on.