When a menu item is clicked, and the action of that menu item is to invoke a Webroutine, the ID of the selected menu item will be placed into this field. For menubars defined with an RDMLX list, the ID will be the ID specified in column 1. For menubars specified with the menu item designer, the value will be a comma delimited sequence of numbers representing the path to the selected item. For example, if the 3rd item in the second menu is selected, the submitted ID would be "2,3".
The name of a *INPUT field in the webroutine(s) being executed.