\section{\class{wxMask}}\label{wxmask}
This class encapsulates a monochrome mask bitmap, where the masked area is black and
-the unmasked area is white.
+the unmasked area is white. When associated with a bitmap and drawn in a device context,
+the unmasked area of the bitmap will be drawn, and the masked area will not be drawn.
\wxheading{Derived from}