diff --git a/src/preprocessed_text.py b/src/preprocessed_text.py
index ac7a55a..49a334c 100644
--- a/src/preprocessed_text.py
+++ b/src/preprocessed_text.py
@@ -440,8 +440,6 @@ def irp_simple_statements(text):
   def process_function(line):
     assert isinstance(line,Function)
     buffer = line.text.split('(')
-    if (len(buffer) < 2):
-      error.fail(line,"Syntax error")
     subname = find_subname(line)
     length = len(subname)
     i = line.i
diff --git a/src/subroutine.py b/src/subroutine.py
index 78a5c5a..35e54c9 100644
--- a/src/subroutine.py
+++ b/src/subroutine.py
@@ -42,8 +42,15 @@ class Sub(object):
   ############################################################
   def touches(self):
     if '_touches' not in self.__dict__:
-      self._touches = filter(lambda x: isinstance(x,Touch),self.text) != []
+      from subroutines import subroutines
+      self._touches = []
+      for line in filter(lambda x: isinstance(x,Touch),self.text):
+        self._touches += line.text.split()[1:]
+      for sub in self.calls:
+        self._touches += subroutines[sub].touches
+      self._touches = make_single(self._touches)
     return self._touches
+  touches = property(touches)
 
   ############################################################
   def regexp(self):
@@ -62,6 +69,7 @@ class Sub(object):
       for line in buffer:
         sub = line.text.split('(',1)[0].split()[1]
         self._calls.append(sub)
+      self._calls = make_single(self._calls)
     return self._calls
   calls = property(calls)
 
@@ -69,4 +77,4 @@ class Sub(object):
 if __name__ == '__main__':
   from preprocessed_text import preprocessed_text
   from subroutines import subroutines
-  print subroutines['invert'].calls
+  print subroutines['brownian_step'].touches
diff --git a/src/util.py b/src/util.py
index 0b4aa71..f197d5a 100644
--- a/src/util.py
+++ b/src/util.py
@@ -38,6 +38,12 @@ def find_subname(line):
     error.fail(line,"Syntax Error")
   return buffer[-1]
 
+def make_single(l):
+  d = {}
+  for x in l:
+   d[x] = True
+  return d.keys()
+
 
 if __name__ == '__main__':
   print build_dim([])
diff --git a/src/variable.py b/src/variable.py
index 9b0cc73..1ad998d 100644
--- a/src/variable.py
+++ b/src/variable.py
@@ -165,4 +165,5 @@ class Variable(object):
 if __name__ == '__main__':
   from preprocessed_text import preprocessed_text
   from variables import variables
-  print variables['elec_fitcusp_lapl'].doc
+  for v in variables.keys():
+    print v