haskell-extensions.md

 # Known Haskell Extensions
 
-[ The original extensions list can be found here](http://www.haskell.org/ghc/docs/latest/html/libraries/Cabal/Distribution-Extension.html)
+[ The extensions that Cabal knows about can be found here](http://www.haskell.org/ghc/docs/latest/html/libraries/Cabal/Distribution-Extension.html)
 
 ## Support Matrix
 
@@ -39,7 +39,7 @@
 <th> False </th>
 <th> True 
 </th></tr>
-<tr><th>RankNTypes</th>
+<tr><th>[RankNTypes](rank-n-types)</th>
 <th> True </th>
 <th> False </th>
 <th> True 
@@ -79,7 +79,7 @@
 <th> True </th>
 <th> True 
 </th></tr>
-<tr><th>CPP</th>
+<tr><th>CPP?</th>
 <th> True </th>
 <th> True </th>
 <th> True 
@@ -124,12 +124,12 @@
 <th> False </th>
 <th> False 
 </th></tr>
-<tr><th>Arrows</th>
+<tr><th>[Arrows](arrows)</th>
 <th> True </th>
 <th> False </th>
 <th> False 
 </th></tr>
-<tr><th>Generics</th>
+<tr><th>Generics?</th>
 <th> True </th>
 <th> False </th>
 <th> False