documentation on the tests

doc/config.txt

@@ -94,6 +94,11 @@ And if you wanna come back to a default value, use the builtin `del()` function:
 
 .. module:: tiramisu.config
 
+.. _`tree`:
+
+The handling of options
+~~~~~~~~~~~~~~~~~~~~~~~~~~
+
 The handling of options is split into two parts: the description of
 which options are available, what their possible values and defaults are
 and how they are organized into a tree. A specific choice of options is

doc/error.txt

@@ -11,8 +11,8 @@ Three builtins exceptions are used :
 
 - **AttributeError** : wrong path or unknownd  option or optiondescription 
     
-And five user-defined exceptions :
------------------------------------
+And five other exceptions :
+------------------------------
 
 .. automodule:: tiramisu.error
    :members:

doc/index.txt

@@ -35,7 +35,8 @@ configuration handler.
     consistency
     error
     glossary
-
+    test
+    
 Indices and tables
 ==================
 
@@ -52,4 +53,3 @@ This work is licensed under a `Creative Commons Attribution-ShareAlike 3.0 Unpor
 
 
 
-