Subfile Cursor Location

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I am looking for a way to highlight a record within a subfile, dependent
upon the location of the cursor.  Have not been able to turn anything up on
how to do this.
Can you guys help with this one.  If you say there is no way, then I will
give up.

Example of what I am wanting to do.   The gray highlighted would be where my
cursor would be positioned.  No enter has been done other than the load of
the subfile, just a movement of the cursor.   So wherever the cursor is
moved within the subfile I would like to highlight the record it is on.

Sel  Description                                     Item#
Cls  Cde    Available Inv.
 ===  =============================   =============== === =====
==============
  B  O OOOOOOOOOOOOOOOOOOOOOOOOOOOOOO  OOOOOOOOOOOOOOO  OO OOOOO
66666666.666-
  B  O OOOOOOOOOOOOOOOOOOOOOOOOOOOOOO  OOOOOOOOOOOOOOO  OO OOOOO
66666666.666-
  B  O OOOOOOOOOOOOOOOOOOOOOOOOOOOOOO  OOOOOOOOOOOOOOO  OO OOOOO
66666666.666-
 B  O OOOOOOOOOOOOOOOOOOOOOOOOOOOOOO  OOOOOOOOOOOOOOO  OO OOOOO
66666666.666-
 B  O OOOOOOOOOOOOOOOOOOOOOOOOOOOOOO  OOOOOOOOOOOOOOO  OO OOOOO
66666666.666-

Thanks for your help.