The selectability attribute determines whether the user can stimulate a response by selecting the object on the screen. An object is either selectable or not. You can specify enabled (selectable) or disabled (not selectable) as an attribute when you define the object.
•If you define an object as being enabled, and you have defined a response for that object in the program, selecting the object causes the actions specified in the response to be performed.
•If you define an object as disabled, selecting the object does not generally produce a response, even if you include a response for that object in the program. (The only exception is that it does trigger an on activate response, if one exists.)