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==LM.txt==
The [[LM.txt file]] format allows specification of a model which switches geometry as it moves away from the observer. It supports animation seamlessly through the LOD process, and allows hiding child attachment points at lower levels of detail. It acts as a substitute for a normal "*.im" mesh file. This format is suitable for complex, animated objects and is incompatible with [[mesh stitching]].

TBD: provide usage example here.