How to use 'Schema- Builder' in Salesforce

Hi All,  while working with salesforce we have to deal with many S-Object and Custom-Objects.we need to set up relation ship (Master/Lookup) among these all.But to keep this relation-ship in mind is very typical.
 To get a rid of this problem Salesforce has provided it's new tool "Schema-Builder".

Specification:-
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In Schema Builder We may observe relation ship among many objects.Different different color lining are used to make it clear and out of any sort of technical-dilemma.
to configure
1.)go to Set up ->App setup->where you will easily 'Schema builder' link.

2.) click on this link you will be redirected t new Page with schema home page where you will get a list of objects.
3.) Select object to view pre-defined relationship among them.