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/**
* crane looks like this: ("----" - fork, "ssss" - stand, "xxx" - crane rail)
*
* ----- .pos2 __/0/ ----- | sssss | sssss | xxx | ----- distance between stands .pos1 __|/distance/ ----- sssss
* sssss xxx xxx xxx xxx xxx xxx
*
* so if pos2 defined - it will be the second fork; BUT! if the flag "draw second stand" defined - that will draw or
* not draw the stand for pos1...
*
* if there is just one fork but two TUs to handle is possible:
*
* xxx ________ .pos1 .pos2 ________ sssss sssss xxx xxx xxx
*/
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