User`s manual
  Copyright© 2002-2003 Pacific Digital Corporation  Page 53 
3.  The third type of frame has a “groove” cut into the inside 
perimeter of the frame, which is used by the stand mechanism to 
swivel a metal clip into the groove for retention. This is the type of 
frame that will work with MemoryFrame. A rear-view of this type 
of required frame and the groove in the frame is shown in Figure 23. 
Typically, this type of frame is made of wood, but sometimes is 
made of metal or other materials. 
  Figure 23 – Example of groove in rear of frame 
Retention Groove – Minimum Length 
In the example picture frames shown in this manual, the retention groove 
extends around the entire interior perimeter of the rear of the frame. It is 
not required for the groove to extend this far, but is acceptable if it does. 
At minimum, the groove must be at least 6 inches in length and be 
centered on each of the two short sides of the frame, Grooves are not 
required on the long sides of the frame, but are acceptable if present. 










