That which governs the running of the club... in theory.
Has suffered a lot over the years due to poor management, Guild losing it, adjusting to countless Guild rule changes, and that time everything was digitised.
2005 passed a small portion of the lost changes (mostly typographical errors)
2007 had some minor tweaks
2011 allowed for disposition of doubles.
2013 specified details regarding elections, and fixed a plethora of errors which had probably already been addressed in the lost years
2017 allowed for disposition of other library items and provided the structure for how to do so, and fixed one typo
A copy of the constitution, last amended 10/3/2017, is available here