What is the use of Custom Controller in ABAP WebDynpro?

Hi,
Can you explain me about Custom Controller and its uses and some example on it?
I have gone through SAP help but not understand clearly. Wish to see some good explanation here?
Thanks in advance.
Regards,
Meera.

In addition to above,
1. Custom controller can acts as "Config Controller"
2. it is bit different than component controller in the manner that Hook methods will be different here ( only two ) and
these methods will not participate in the phase model unless there is a method call of custom controller as opposed to component controller which always participate in the phase model.
someone please correct me for the last statment if i am wrong.
Edited by: kranthi kumar on Dec 31, 2010 11:37 AM

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