Uploaded an example & Class.
This basically makes use of the existing MARK attribute of a listbox,
but adds more functionality.
Caveat: If you have more than 65536 records in your queue, then the
marked records don’t display correctly if you programmatically update
the value of the MARK field.
Other than that, it’s kind of nice to not have to color every field in
the listbox just to achieve marking. Clarion takes care of it with the
I have not tested this on a file-loaded browse. Would be nice if it
worked, but I don’t know if it does.