::  Combine /tree-head/ and /tree-body/
::
::::  /hoon/tree/urb/ren
  ::
/?    310
/=   hed    /#    /%   /tree-head/
/=   bod    /#    /%   /tree-body/
^-  {hed/{@uvH marl} bod/{@uvH marl}}
[hed bod]