Small changes to docs to make rst errors go away

doc/library/printing.txt

@@ -71,9 +71,7 @@ iteration number or other kinds of information in the name.
     To make graphs legible, :func:`pp` hides some Ops that are actually in the graph.  For example,
     automatic DimShuffles are not shown.
 
-2) The second fonction to print a graph is :func:`theano.printing.debugprint`(Variable, depth=-1)
-You can use it on graph variables and compiled functions. 
-
+2) The second function to print a graph is :func:`theano.printing.debugprint(variable_or_function, depth=-1)`
 
 >>> theano.printing.debugprint(f.maker.env.outputs[0])
  Elemwise{mul,no_inplace} 46950805397392
@@ -172,6 +170,10 @@ Reference
         running the function will print the value that `x` takes in the graph.
 
 
-.. autofunction:: theano.printing.pp
+.. function:: theano.printing.pp(*args)
+
+    TODO
+    
 
 .. autofunction:: theano.printing.debugprint
+

doc/library/tensor/basic.txt

@@ -767,7 +767,7 @@ Condition
 .. function:: clip(x, min, max)
 
     Return a variable representing x, but with all elements greater than
-    `max` clipped to `max` and all elements less than `min` clipped to `min.
+    `max` clipped to `max` and all elements less than `min` clipped to `min`.
 
     Normal broadcasting rules apply to each of `x`, `min`, and `max`.
 

doc/library/tensor/nnet/conv.txt

@@ -14,7 +14,3 @@ TODO: Give examples for how to use these things! They are pretty complicated.
 
 .. autofunction:: theano.tensor.nnet.conv.conv2d
 
-.. function:: fft(*todo)
-
-    [James has some code for this, but hasn't gotten it into the source tree yet.]
-

doc/library/tensor/signal/index.txt

-.. _libdoc_tensor:
+.. _libdoc_tensor_signal:
 
 =====================================================
 :mod:`signal` -- Signal Processing
@@ -10,7 +10,7 @@ Signal Processing
 .. module:: signal
    :platform: Unix, Windows
    :synopsis: various ops for performing basic signal processing
-   (convolutions, subsampling, fft, etc.)
+       (convolutions, subsampling, fft, etc.)
 .. moduleauthor:: LISA
 
 The signal subpackage contains ops which are useful for performing various