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Scenarios with Builder and Node modules.


Required add-ons: 

Space Tugs (http://www.orbithangar.com/searchid.php?ID=1292)

URMS (http://www.orbithangar.com/searchid.php?ID=3373)

UMMU by Dan Steph (http://orbiter.dansteph.com/index.php?disp=d)
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