HI
In simplicity..
Let us take a formclass which is used to crate a form.
Also in the form, you are adding a navigation class. The navigation class has many codes in its vcr buttons click event.
If in the form created, if the clcick event of ADD button is empty, by default it does the AddButtons click event when user clicks on that. But if you want to say... select a specific modification to what the parent Navigation Class is doing.. and also do the event..
Example..
SELECT myAlias
DODEFAULT()
Here the default of the parent Navigation class is done.
If the dodefault is not there, the click event of parent class will not be executed, and explicitly saying that is NODEFAULT.
If the parent class needs some parameters, you have to put that within the parenthesis... example..
DODEFAULT(myParm1,myParm2...)
Remember that some events do the default even when some codes are put in their event. Example is a KeyPressEvent. Here if you dont want the specific BaseClass function not to be executed.. you add the code.. NODEFAULT.
Hope this explains you.

ramani :-9
(Subramanian.G),FoxAcc, ramani_g@yahoo.com