Who knew?

This is an email from a friend:

Well, I would like to share this with you. Yesterday I went to throw out an empty Reynolds foil box and for some reason I turned it and looked at the end of the box. And written on the end it said, "Press here to lock end". Right there on the end of the box is a tab to lock the roll in place. How long has this little locking tab been there? I then looked at a generic brand of aluminum foil and it had one, too. I then looked at a box of Saran wrap and it had one too! I can't count the number of times the Saran warp roll has jumped out when I was trying to cover something up.

So, did you know this?