T Slot

I have no idea what t slots are for until I bought an L-Shaped desk for our home office. The hubs was out when the package arrived and because I could no longer wait, I decided to assemble the desk by myself. I think it took me two hours to figure out everything. There were like a gazillion nuts and bolts inside the package and a couple of t slots which were used to connect the desks together. And just so you know, there weren't t slots in the manual so I was little lost on how and where to use it. Good thing the hubs arrived just when I'm about to connect the two desks. He showed me how it's done and voila, the L-Shaped came to life! ;)