Saving Meditech Prefix Pointer

Sometimes you'll need to seg to a segment and directory; open a prefix to a Meditech data structure. Then your main program runs on another segment and directory. To save off the pointer, seg to the segment and directory; open a prefix to a structure. O(!,%.ADM.data[A,B]) Close the prefix and assign to a variable. C(!)^/...ADM.DATA To open and reference the structure later, open a prefix to the /...ADM.DATA variable. O(!,/...ADM.DATA).