#JSGF V1.0;grammar demo.jsapi.tags.FeatureValueDemo;// Pizza toppings and command.//<pizzaTopping> = cheese 	       | pepperoni 	       | mushrooms 	       | mushroom               | onions                | onion               | sausage;<pizza> = <NULL> { this.toppings = new Array(); }	  ([and] <pizzaTopping> {               this.toppings = this.toppings.concat($.$value);           })*          (pizza | pie) { this.itemType = "pizza"; }	  [with] ([and] <pizzaTopping> {               this.toppings = this.toppings.concat($.$value);           })*;// Burger toppings and command.//<burgerTopping> = onions                 | pickles                 | tomatoes                 | lettuce                 | cheese;<burgerCondiment> = mayo 		  | relish 		  | ketchup 		  | mustard 		  | special sauce;<burger> = <NULL> { this.toppings = new Array(); }            ((burger | hamburger) { this.itemType = "burger"; }            | cheeseburger { this.itemType = "burger";                             this.toppings = this.toppings.concat("cheese"); }           ) 	   [with] 	   ([and] (<burgerTopping> | <burgerCondiment>) {                       this.toppings = this.toppings.concat($.$value); }           )*;public <order> = [I (want | would like) a] 		 ( <pizza>  { this.command = "buyPizza"; }                 | <burger> { this.command = "buyBurger"; }                 ) { this.item = $; };