The Step Generator enabeles you to add steps to test by 
selecting from a range of context sensetive options. Using 
the step generator u can add steps that performs operation 
using the following criteria:
-- Category: Specifies an object or function that step 
performs. Options available here are Test Objects, Utility 
Objects and Functions.
-- Operation: Specifies available options based on category 
selected.
-- Step Documentation: Displays information about the 
current step.

-It is just to create the step or function
  like you want close the browser for that u need to write  
a code for that you will open that step generator and will 
pass the details
 
-it can generate coding browser.page.webedit etc
-it displays a list of avialble actions ,like loops
 if else,while
  

correct me if i am wrong