What is semantics speech?

If used against this grammar that includes SISR markup in addition to the standard SRGS grammar in XML format:

I would like a out.drink = new Object; out.drink.liquid=rules.drink.type; out.drink.drinksize=rules.drink.drinksize; and out.pizza=rules.pizza; coke pepsi coca colaout="coke"; out="medium"; smallout="small"; medium largeout="large"; regularout="medium"; out=new Array; out.push(rules.top); and out.push(rules.top); anchovies pepperoni mushroomout="mushrooms"; mushrooms out.drinksize=rules.foodsize; out.type=rules.kindofdrink; out.pizzasize=rules.foodsize; out.number=rules.number; pizzas with out.topping=rules.tops; out=1; a one twoout=2; threeout=3;

Source: en.wikipedia.org