More updates to shell section

diff --git a/1-Shell/Readme.rst b/1-Shell/Readme.rst
index 9435c7292bd326fe366ed99ed274242ef867a68a..ee886dbb28dc7c04459c379b942105d0a371290f 100644 (file)
--- a/1-Shell/Readme.rst
+++ b/1-Shell/Readme.rst
@@ -14,12 +14,13 @@ ________________________
 
 # What is the shell how do I access the shell?
 
-The shell presents a command line interface that allows you to control
-your computer using commands entered with a keyboard instead of
-controlling graphical user interfaces (GUIs) with a mouse/keyboard
-combination.
-
-To open the shell in Ubuntu, just click...
-
-or just type <ctrl><alt>t
+The *shell* is a program that presents a command line interface which
+allows you to control your computer using commands entered with a
+keyboard instead of controlling graphical user interfaces (GUIs) with
+a mouse/keyboard combination.
+
+A *terminal* is a program you run that gives you access to the
+shell. There are many different terminal programs that vary across
+operating systems. To open the default terminal in Ubuntu, just
+click... or just type <ctrl><alt>t