This directory contains helper methods only.

### rules

* methods should start with upper-cased letters only
* all arguments should be a single upper-cased letter
* there should be a warning about public consumption

### argument letter meaning

* A = 
* B = 
* C = 
* D = depth
* E = 
* F = function
* G = 
* H = 
* I = in
* J = 
* K = 
* L = 
* M = 
* N = name
* O = out
* P = path
* Q = 
* R = 
* S = source
* T = target
* U = 
* V = value
* W = 
* X = 
* Y = 
* Z =