--- a/basic-plot.txt	Mon Apr 05 19:33:24 2010 +0530
+++ b/basic-plot.txt	Mon Apr 05 22:34:25 2010 +0530
@@ -3,9 +3,9 @@
 Some greeting-- Hi or Hello or Welcome - would be polite to start with
 **********
 
-*Hello and welcome to this  tutorial on Basic Plotting using Python in a series of tutorials on Python for Scientific Computing .This tutorial is created by the FOSSEE team , IIT Bombay .  
+*Hello and welcome to the tutorial on Basic Plotting using Python. This is the first tutorial in a series of tutorials on Python for Scientific Computing. This tutorial is created by the FOSSEE team, IIT Bombay .  
 
-*The intended audience for this tutorial are Engineering , mathematics and science teachers and students
+*The intended audience for this tutorial are Engineering, mathematics and science teachers and students
 
 *The goals are to
 help one use Python as a basic plotting tool.
@@ -14,7 +14,7 @@
 
 *In this tutorial, we will cover the basics of the Plotting features available in Python. 
 For this we shall use  Ipython and pylab. 
-Ipython is An Enhanced Interactive Python interpreter. It provides additional features like tab completion,easier access to help , and many other useful features.
+Ipython is An Enhanced Interactive Python interpreter. It provides additional features like tab completion,easier access to help , and many other useful features which are not present in the vanilla Python interpreter.
 Pylab is python library which provides plotting functionality. 
 
 I am assuming that you have both Ipython and Pylab installed on your system .
@@ -23,15 +23,15 @@
 $ ipython -pylab
 press RETURN
 
-We will first start with the absolute basic i.e how to print hello world
+We will first start with the absolute basic, that is how to print hello world
 
 In []: print 'hello world'
 
-Voila we have got hello world output 
+Voila we have got hello world as the output 
 
-To exit ipython type Ctrl-D . It will ask if you wish to exit ipython .
+To exit ipython press Ctrl-D.
 
-*Now we will get back to plotting .
+*Now we will get back to plotting.
 
 type again :
 $ ipython -pylab
@@ -61,7 +61,9 @@
 
 In []: linspace?
 
-It shows documentation related to linspace function. 'help' talks in detail about arguments to be passed, return values, some examples on usage. You can scroll the help using up , down and pageup and pagedown arrows and q for quitting . See how easy to get help in python .  
+It shows documentation related to linspace function. 'help' talks in detail about arguments to be passed, return values, some examples on usage. You can scroll the help using up , down arrows ,  pageup and pagedown keys .
+At any time you want to come out of the help use q key . 
+See how easy it is  to get help in python .  
 
 *As you can see linspace can take three parameters start, stop, and num and returns num evenly space points . You can scroll through the help to know more about the function
 
@@ -89,6 +91,7 @@
 
 We can modify previous command to specify the location of the legend, by passing an additional argument to the function. 
 #Ask madhu how to describe the feature here.
+Once you start editing a previous command and then you try to use 'Up arrow key ' you can get commands that are only similar to the command you are editing . But if you move your cursor to the beginning of the line you can get all the previous commands using up and down arrow keys .
 In []: legend(['sin(x)'], loc = 'center')
 
 Note that once