Key:
  <function description>: <function arity>

3 params: 3-ary fun
2 params then 1 param: 2-ary fun returning 1-ary fun
1 param then 2 params: 1-ary fun returning 2-ary fun
1 param, then 1 param, then 1 param: 1-ary fun returning 1-ary fun returning 1-ary fun
1 param then let-bound 2 params: 1-ary fun returning 2-ary fun
2 params then let-bound 1 param: 2-ary fun returning 1-ary fun
1 param, then let-bound 1 param, then let-bound 1 param: 1-ary fun returning 1-ary fun returning 1-ary fun