Custom menus by Product

 I have a SKILL file that loads a couple custom menu items.  One of the custom menu items is relevant to two products PCB Editor and Symbol Editor), but the other one only applies to PCB Editor, so I do not want it to load when the Symbol Editor is invoked.  I wanted to find out if it is possible to determine which product is starting (e.g. Allegro PCB Editor or Allegro Symbol Editor) and only load the custom menu relevant to that product, and if so, how would I do that?  Do I need to have three different SKILL files, one that figures out the product and then calls the appropriate SKILL menu file?