diff --git a/umbra/filereader.py b/umbra/filereader.py
index dd5ee4497a711673c3603726c9f5cdec545e33a2..444a04791a0a3c6999e81ec0068671529f3beea0 100644
--- a/umbra/filereader.py
+++ b/umbra/filereader.py
@@ -66,6 +66,7 @@ class CSVReader(FileReader):
         """
         Args:
             path: string, the internal path to the source file
+            type: string, the type (source/shadow) of the source file.
         """
         super().__init__(path)
         self._type = type  # Very dirty fix
@@ -150,7 +151,6 @@ class TxtWriter(FileWriter):
         final = np.append(final, "Skips: "+str(info[2]))
         np.savetxt(path, final, fmt="%s", header="Word|Shadowed")
 
-# Untested
     def _participant_path(part_number):
         """
         Create a path for the appropriate participant.
@@ -189,11 +189,16 @@ class CSVWriter(FileWriter):
             writer.writerow(info)
 
     def write_multiple(self, dir, dict):
+        """
+        Write multiple CSV files.
+        Args:
+            dir (string), the directory paths
+            dict (dictionary), dictionary containing results
+        """
         for key, results in dict.items():
             path = self._participant_path(dir, key)
             self.write(path, results)
 
-    # TODO: Test per-participant writing
     def _participant_path(self, dir, key):
         """
         Create a path for the appropriate participant.
diff --git a/umbra/model.py b/umbra/model.py
index 702f161d7c0b7158e3b19ea536b8d8976a72ffa8..ae4532c0742b3c60dac3e5add5f51fef84531054 100644
--- a/umbra/model.py
+++ b/umbra/model.py
@@ -71,7 +71,7 @@ class Model:
 
                     if self._id is ut.filter_key(key):
                         result = self._stats.analyze(self._data_source, data)
-                        self.add_to_dict(key+"_res", result, self._multi_results)
+                        ut.add_to_dict(key+"_res", result, self._multi_results)
                     else:
                         pass
             else:
diff --git a/umbra/umbra.py b/umbra/umbra.py
index ed32cc2f2eca8f59f8281459bb9bcd5d2c36afab..9b5a64b2e2f14fa046dcbc73452440817cad14b4 100644
--- a/umbra/umbra.py
+++ b/umbra/umbra.py
@@ -15,6 +15,6 @@ class Umbra:
         """Start the main loop."""
         self._controller.start()
 
-B
+
 if __name__ == "__main__":
     Umbra().main()