[TYPO3-english] Extending TYPO3 Copy-Paste ability

[Sancar Saran]

Hello everyone.

Recently one of our customers wants to multi domain setup on his TYPO3 setup. 
After some check we find, we have to extend copy - paste ability of TYPO3. Our 
custom page design system have own page setup data on seperated db table.

So we need to add some lines into copy paste system to copy our db records 
too.

How can we do this ? Where should I put my code in TYPO3 lib ?

Regards.

Sancar