/sys$common/syshlp/HELPLIB.HLB  —  RTL Routines, LIB$  LIB$LOOKUP_TREE
    The Look Up an Entry in a Balanced Binary Tree routine looks up
    an entry in a balanced binary tree.

    Format

      LIB$LOOKUP_TREE  treehead ,symbol ,user-compare-routine

                       ,new-node
Additional Information: explode extract
Returns Arguments
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