...descriptor.

In the Chez version of SIXlib, the scale argument is not allowed. Some versions of the Chez library accept separate width and height arguments, while other versions require a single posn argument.

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...etc

Mouse clicks are buffered and returned in the same order in which they occurred. Thus, the descriptors returned by get-mouse-click and ready-mouse-click may be from clicks that occurred long before these functions were called.

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...value).

Key presses are buffered and returned in the same order in which they occurred. Thus, the descriptors returned by get-key-press and ready-key-press may be from presses that occurred long before these functions were called.

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