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Leveling and Alignment ( 10 )
VIII. LoopÀÇ ¼±ÅÃ
1. Open µÈ loopÀÇ °æ¿ì
2. Closed µÈ loopÀÇ °æ¿ì
3. È¥ÇÕµÈ loopÀÇ °æ¿ì