| http://www.w3.org/ns/prov#value | - Additional alternative embodiments for precluding binding include a catch or an engaging receptacle for each stand off in the second position with an external release mechanism, for example, or a friction reducing means such as one or more wheels positioned on second side 1668 and/or third side 1664 that could accommodate the withdrawal of the large instrument while in a distal or second position
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