--- a/using python modules/script.rst	Tue Oct 12 16:26:36 2010 +0530
+++ b/using python modules/script.rst	Tue Oct 12 17:15:11 2010 +0530
@@ -17,7 +17,8 @@
 {{{ switch to next slide, outline slide }}}
 
 In this tutorial, we will see how to run python scripts from command
-line, importing modules, importing scipy and pylab modules.
+line, importing modules, importing scipy and pylab modules. And also
+see the Python standard library.
 
 {{{ switch to next slide on executing python scripts from command line }}}
 
@@ -48,6 +49,8 @@
 
 {{{ open terminal and navigate to directory where hello.py was saved }}}
 
+{{{ switch to next slide }}}
+
 now run the Python script as,
 ::
 
@@ -59,6 +62,8 @@
 
 The syntax is python space filename.
 
+{{{ switch to next slide, four plot problem }}}
+
 Now recall the four plot problem where we plotted four plots in a single
 figure. Let us run that script from command line.
 
@@ -87,6 +92,8 @@
 So now let us try to fix the problem and run the script in command
 line,
 
+{{{ switch to next slide, fix ``linspace`` problem }}}
+
 add the following line as the first line in the script,
 {{{ add the line as first line in four_plot.py and save }}}
 ::
@@ -100,6 +107,9 @@
 
 Now it gave another error plot not defined, let us edit the file again
 and add the line below the line we just added,
+
+{{{ switch to next slide, fix ``plot`` problem }}}
+
 {{{ add the line as second line in four_plot.py and save }}}
 ::
 
@@ -115,6 +125,8 @@
 We actually imported the required modules using the keyword ``import``.
 It could have also be done as,
 
+{{{ switch to next slide, better way of fixing }}}
+
 {{{ highlight the following in slide and say it loud }}}
 ::
 
@@ -130,29 +142,26 @@
 module then it will replace any existing functions with the same name
 in our name-space.
 
+{{{ switch to next slide, Instead of ``*`` }}}
+
 So let us modify four_plot.py as,
 {{{ delete the first two lines and add the following }}}
 ::
 
     from scipy import linspace, pi, sin
-    from pylab import plot, legend, annotate, title, show
-    from pylab import xlim, ylim
+    from pylab import plot, legend, annotate
+    from pylab import xlim, ylim, title, show
+
+Now let us try running the code again as,
+::
+
+    python four_plot.py
+
+It works! In this method we actually imported the functions to the
+current name-space, and there is another method of doing it. And that
+is,
 
 {{{ switch to next slide }}}
-it could also be done as,
-
-..     import scipy
-..     import pylab
-..     x = scipy.linspace(-5*scipy.pi, 5*scipy.pi, 500)
-..     pylab.plot(x, x, 'b')
-..     pylab.plot(x, -x, 'b')
-..     pylab.plot(x, scipy.sin(x), 'g', linewidth=2)
-..     pylab.plot(x, x*scipy.sin(x), 'r', linewidth=3)
-..     pylab.legend(['x', '-x', 'sin(x)', 'xsin(x)'])
-..     pylab.annotate('origin', xy = (0, 0))
-..     pylab.xlim(-5*scipy.pi, 5*scipy.pi)
-..     pylab.ylim(-5*scipy.pi, 5*scipy.pi)
-
 
 Notice that we use ``scipy.pi`` instead of just ``pi`` as in the
 previous method, and the functions are called as ``pylab.plot()`` and
@@ -211,7 +220,7 @@
 The modules pylab, scipy, Mayavi are not part of the standard python
 library.
 
-{{{ switch to next slide, recap }}}
+{{{ switch to next slide, summary }}}
 
 This brings us to the end of this tutorial, in this tutorial we
 learned running scripts from command line, learned about modules, saw