|HGL-3.1: A simple graphics library based on X11 or Win32||Contents||Index|
|Types for units in a simple graphics library.
|type Point = (Int, Int)|
|A position within a window, measured in pixels to the right and down
from the top left corner.
|type Size = (Int, Int)|
|A (width, height) pair, both measured in pixels.
|type Angle = Double|
|An angle in degrees (0 to 360).
|type Time = Integer|
|Time, measured in milliseconds.
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