--------------

getitem
^^^^^^^^^

Basis Function Combinator


::

    getitem == drop first

Expects an integer and a quote on the stack and returns the item at the
nth position in the quote counting from 0.
::

       [a b c d] 0 getitem
    -------------------------
        a



Gentzen diagram.


Definition
~~~~~~~~~~

if not basis.


Derivation
~~~~~~~~~~

if not basis.


Source
~~~~~~~~~~

if basis


Discussion
~~~~~~~~~~

Lorem ipsum.


Crosslinks
~~~~~~~~~~

Lorem ipsum.


