VIDEO.Contrast

contrast = VIDEO.Contrast( nControl AS INTEGER,

                           contrast AS REAL ) AS REAL

Adjust video contrast

Example:

VIDEO.Grid( nControl, MT_Grid_Solid, 3, 3, RGB( 222, 122, 111 ) )

VIDEO.Gamma( nControl, -0.25 )

VIDEO.Contrast( nControl, 0.25 )