The obverse legend, like other French coins, gives the kingâs title as Francorum Rex ( King of the Franks  in Latin) and provides another reason to call the coin a franc. Its value was set as one livre tournois (a money of account).
Favor has a no-tipping policy from company to restauraunt, so those waitstaff that take your order pay out the kitchen (they have to pay out a certain percentage of their total sales) for you to not tip. They pay the kitchen to make these orders and make no money, unless you tip out of pocket.
You never HAVE to tip for delivery pizza, but if you become known as a non-tipper, the delivery people will be less inclined to treat you well (hot, prompt, etc.). As far as two American chains go, Pizza Hut and Papa John's both charge delivery fees and if you look hard enough on their web sites, those delivery fees do not go to the drivers, at all.