| 摘要 |
A method of detecting a position of a movable building structure includes mounting a readable code in association with a first surface of the movable building structure or with a second surface of a second structure. A code reader is mounted in association with the other of the first surface and the second surface. The readable code is read by the code reader to thereby verify that the first surface of the movable building structure is disposed in opposition to the second surface of the second structure.
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