[[!meta copyright="Copyright © 2007, 2008 Free Software Foundation, Inc."]]

[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
id="license" text="Permission is granted to copy, distribute and/or modify this
document under the terms of the GNU Free Documentation License, Version 1.2 or
any later version published by the Free Software Foundation; with no Invariant
Sections, no Front-Cover Texts, and no Back-Cover Texts.  A copy of the license
is included in the section entitled
[[GNU Free Documentation License|/fdl]]."]]"""]]

Neal Walfield and Marcus Brinkmann wrote a paper titled [*Improving Usability
via Access Decomposition and Policy
Refinement*](http://walfield.org/papers/20070104-walfield-access-decomposition-policy-refinement.pdf)
where they give an overview about how a future, subsequent system may be
architected.  This is sometimes referred to as *the position paper*.