[AccessD] Syntax for referencing subform in a subform

I just wrote a quick entry on referencing subforms and a reader wants to
know how to reference a subform in a subform. Frankly, I don't think I've
ever tried -- I can't remember one single time when I've created a subform
in another subform. 

Since a subform is a control in the form, what's a subform in another
subform -- can a control have dependent controls? 

Susan H.