|  | Data | 
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These values are temporary stores for x- and y-coordinates used in window drawing and graphic rendering as part of the room drawing process.
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| 23418 | DEFB 0 | x-coordinate of left edge (of frame, or of interior) of window (characters) / graphic (room drawing) | ||
| 23419 | DEFB 0 | y-coordinate of top edge (of frame, or of interior) of window (characters) / graphic (room drawing) | ||
| 23420 | DEFB 0 | x-coordinate of right edge (of frame, or of interior) of window (characters), x+1 for current graphic (room drawing) | ||
| 23421 | DEFB 0 | y-coordinate of bottom edge (of frame, or of interior) of window (characters), y+1 for current graphic (room drawing) | ||
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