diff --git a/tldp/outputs.py b/tldp/outputs.py
index 6ddb048..36a951c 100644
--- a/tldp/outputs.py
+++ b/tldp/outputs.py
@@ -10,7 +10,8 @@ from .utils import logger
 
 class OutputNamingConvention(object):
 
-    expected = ['name_txt', 'name_pdf', 'name_htmls', 'name_html']
+    expected = ['name_txt', 'name_pdf', 'name_htmls', 'name_html',
+                'name_index']
 
     def __init__(self, stem, dirname):
         self.stem = stem
@@ -32,6 +33,10 @@ class OutputNamingConvention(object):
     def name_htmls(self):
         return os.path.join(self.dirname, self.stem + '-single.html')
 
+    @property
+    def name_index(self):
+        return os.path.join(self.dirname, 'index.html')
+
 
 class OutputDirectory(OutputNamingConvention):
 
@@ -47,14 +52,16 @@ class OutputDirectory(OutputNamingConvention):
             os.mkdir(dirname)
         super(OutputDirectory, self).__init__(self.stem, self.dirname)
 
-    def clear(self):
-        logger.info("%s clearing directory", self.stem, self.dirname)
+    def clean(self):
+        logger.info("%s cleaning directory %s.", self.stem, self.dirname)
         for oformat in self.expected:
             name = getattr(self, oformat, None)
             assert name is not None
-            if os.path.exists(name):
-                logger.info("%s removing file %s", self.stem, name)
+            if os.path.exists(name) or os.path.islink(name):
+                logger.info("%s cleaning directory %s, removing file %s",
+                            self.stem, self.dirname, os.path.basename(name))
                 os.unlink(name)
+        return True
 
 
 class OutputTree(object):
@@ -68,7 +75,7 @@ class OutputTree(object):
             logger.critical("Directory %s must already exist.", dirname)
             raise OSError(errno.ENOENT, os.strerror(errno.ENOENT), dirname)
         self.dirname = dirname
-        self.docs = list()
+        self.docs = dict()
         self.enumerateDocuments()
 
     def enumerateDocuments(self):
@@ -77,7 +84,9 @@ class OutputTree(object):
             if not os.path.isdir(name):
                 logger.warning("Skipping non-directory %s (in %s)",
                                name, self.dirname)
-            self.docs.append(OutputDirectory(name))
+            o = OutputDirectory(name)
+            assert not self.docs.has_key(o.stem)
+            self.docs[o.stem] = o
 
 
 #