Document AjaxException.

vispa/__init__.py

@@ -256,8 +256,9 @@ class AjaxException(Exception):
     """
     AjaxException that is handled by the ajax tool and that can be raised in controller methods.
     *message* is the error message to show. *code* should be an integer that represents a specific
-    type of exception. Note that this code is meant to extend HTTP status codes, i.e. 500 means
-    "internal server error", etc. If *alert* is *True*, the message is shown in a dialog in the GUI.
+    type of exception. If *code* is *None* and *message* is an integer representing a http status
+    code, the error message is set to the standard error message for that http error. If *alert* is
+    *True*, the message is shown in a dialog in the GUI.
     """
 
     def __init__(self, message, code=None, alert=True):