IP board forum question

if you ever used an IP board forum you can see that you can click on "quote" for every message you want to quote and onc开发者_如何学Ce you go in the "add reply" page you'll have the quotes automatically in your answer form. I checked with firebug that once you click on quote no HTTP script is called (like via AJAX to store the quotes id in a session) nor the info is sent to the other page via GET. So how is this quotes info passed to another page?

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