Did some editing on a narrow screen, realized I need to enforce the 80-character limit.  Trying to generally solve the nesty_chain situation
preparing to hand down manipulators
Added single-cell duplication
Defaulting to NULL
Making the target names simpler and reflective of their respective source files
Recursion-free expression duplication
Annoying trailing whitespace
I think I safely depict dotted conses and have not ruined anything else... I think
cleaning up depiction -- this may justify a refactor
linearization should go away and be replaced by straight buffer writing