How to clear clipboard?

I stored clipboard like below but when I ctrl+v the content is still alive. How do I clear it?
store| |!clipboard

Can I ask why you want to clear it? What is the benefit?

Hi ulrich thanks for the reponse. if my macro fails to grab some links, texts, images, it pastes wrong data from the clipboard onto my editor. So I thought I’d better make it clear the clipboard before grabbing them because even if it fails to grab them, it pastes nothing onto my text editor and that’d make my documents stay organized.