displayHeight
A Number variable that stores the height of the screen display.
displayHeight is useful for running full-screen programs. Its value depends on the current pixelDensity().
Note: The actual screen height can be computed as displayHeight * pixelDensity().
Examples

function setup()
-- Set the canvas' width and height
-- using the display's dimensions.
size(displayWidth, displayHeight)
background(200)
describe('A gray canvas that is the same size as the display.')
end