Hypertalk System Messages

             Messages sent to a button:

               deleteButton -- sent just before it disappears

               mouseDoubleClick -- sent after the second mouse click

               mouseDown -- sent when the mouse button is down while the pointer is
             inside its rect.

               mouseEnter --sent as soon as the pointer is moved within its rect

               mouseLeave --sent as soon as the pointer is moved outside its rect

               mouseStillDown --sent repeatedly while mouse button is held down
             with pointer inside its rect

               mouseUp --sent when button is released while pointer is inside rect

               mouseWithin --sent repeatedly while pointer is within its rect

               newButton -- sent as soon as it is created 


             Messages sent to a field:

               closeField --sent to an UNLOCKED field when it is closed after text
             editing.

               deleteField --sent just before it disappears

               enterInField --sent if the enter key is pressed in a field

               mouseDoubleClick -- sent after the second mouse click in LOCKED
             field

               mouseDown --sent to a LOCKED field when the mouse button is
             pressed down while the mouse pointer is inside it.

               mouseEnter --sent as soon as the pointer is moved inside it.

               mouseLeave --sent as soon as the pointer is moved outside of it.

               mouseStillDown --sent to a LOCKED field repeatedly while the mouse
             button is pressed down while the pointer is inside it.

               mouseUp --sent to a LOCKED field when the mouse pointer is released
             while the pointer is released within it.

               mouseWithin --sent repeatedly while the pointer is inside it.

               newField --sent as soon as it has been created

               openField --sent to an UNLOCKED field when it is opened for text
             editing, by clicking the field or moving the text insertion point from the
             previous field with Tab. 

               returnInField --sent if the return key is pressed in a field

               tabKey --sent when Tab key pressed while text insertion point is in
             field. 


             Messages sent to a card:

               appleEvent <class>,<id>,<sender> -- sent to card when Apple event is
             received.

               arrowKey <var> --sent when an arrow key is pressed. The var can be
             left, right, up, down.

               closeBackground --sent when Edit Background is unchecked on the Edit
             menu or when Command-B is pressed. 

               closePalette --sent when Palette is closed. 

               closePicture --sent when Picture is closed. 

               closeCard --sent when it is closed, or by quitting Hypercard.

               closeStack --sent when a stack is closed by opening another stack.

               controlKey <var> --sent when a combination of the command key and
             another key 

               deleteBackground --sent when a background is deleted, just before it
             disappears.

               deleteCard --sent to a card that is being deleted, just before it disappears.

               deleteStack --sent to a card when stack is being deleted, just before it
             disappears.

               doMenu <var1>,<var2> -- sent to card when menu item selected.

               enterKey --sent when the Enter key is pressed.

               functionKey <var> --sent when a function key on Apple Extended
             Keyboard is pressed. The var can contain 1 to 15.

               help --sent when Help is chosen from the Go menu, or Command-? is
             typed.

               idle --sent repeatedly when nothing else is happening.

               keyDown <var> --sent when key pressed. The var can contain 1 to 255.

               mouseDoubleClick --sent when the second mouse click is released.

               mouseDown --sent when the mouse button is pressed down.

               mouseDownInPicture --sent when the mouse button is held down
             within Picture.

               mouseStillDown --sent repeatedly while the mouse button is held down.

               mouseUp --sent when the mouse button is released

               mouseUpInPicture --sent when mouse button released after being down
             in Picture.

               moveWindow --sent when you cahange window location property, or
             drag window.

               newBackground --sent as soon as a new background has been created.

               newCard --sent as soon as it has been created.

               newStack --sent when a stack is created.

               openBackground --sent when Edit Background is checked on the Edit
             Menu, or 

               command-B is selected to toggle it on.

               openCard --sent when it is opened by going to that card.

               openPalette -- sent when palette is opened

               openPicture -- sent when picture is opened

               openStack --sent when a stack is opened.

               quit --sent when you choose Quit Hypercard from the File menu, or
             type Command-Q.

               resume --sent when Hypercard resumes running.

               resumeStack --sent when you return to already open stack.

               returnKey --sent when the Return key is pressed.

               show menubar -- sent if menubar is hidden and you press
             command-spacebar.

               sizeWindow -- sent if card window is resized.

               startUp --sent to the first card when Hypercard is first started.

               suspend --sent when Hypercard is suspended.

               suspendStack --sent just before switching to another stack.

               TabKey --sent when the Tab key is pressed.