rewrite mechanics intro

glossary.tex

@@ -70,8 +70,10 @@ Nobody goes hungry outside of a town, as all forests bloom with roots, fruits, a
 
 And the monsters wander through a generous forest.}
 
-\setglossarypreamble[mech]{\label{glosPreamble}BIND runs on a minimalist set of open-ended, extensible rules.
-This collection is all you will need for this book.}
+\setglossarypreamble[mech]{\label{glosPreamble}%
+  Each of these books has its own selection of rules, made to fit.
+  None has the lot, but they all have enough.
+}
 
 %%%%%%%%%% Meta Terminology %%%%%%%%%%