Question about cahtting and trading

WhenI see the Trading tab in chat I can see people are posting items in the chat? How do you do this? Sorry if it's a stupid question, but I can't find out anywhere.|||

I think that you need to open your inventory and then press shift and click on the item in order to link it in the chat, I'm not 100% sure and I can't test it now, but you can try :), if it's not shift it's ctrl or another one near the bottom-left part of the keyboard.