The response inquiry functions are:

•ancestry        

•eventnumber        

•eventparam        

•helpid                

•input                

•object                          

•parameter

•xcoord  

•ycoord  

•xdelta  

•ydelta

These functions are used to discover the characteristics of the stimulus that initiated a response. For example, if the response was stimulated by selecting an object, the value returned by the object function is the name of the object that was selected, and the values returned by the xcoord and ycoord functions are the positions of the selection point in the object's coordinate system.

If the response was stimulated by input from the keyboard or an application, the value returned by the input function is the data that was received by ESL from the keyboard or the application.