locations now with stop command

psGrammar/demos/locations.jsgf

 #JSGF V1.0;
 grammar location;
 
-public <command> = <location>;
+public <command> = <location> | <stop>;
+
+<stop> = (abort save);
 
 <location> = (table <numberOfTable>) | shelf | drinks | snacks | (view <numberOfTable>);
 <numberOfTable> = (one | two | three | four | five | six | seven | eight | nine);