erase-by-x-y

Arguments: stream x y

Erases a line from the current position in stream to a position that is x pixels to the right of the current position and y pixels downward from the current position. (Erasing means drawing in the stream's background-color.) stream should be a graphical-stream. x and y should be integers. To use a position object rather than individual coordinates, see erase-by.

The current position may be set by calling move-to-x-y.

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Created 2015.5.21.