Adding constant delay of 35200 or -35200 (ms) causes the program to freeze: dialog box only half disappears, then hourglass for mouse pointer, ad infinitum.
(What I want to do is re-sync a subtitle file where I think the sub timings are correct in terms of duration of and between subs, but start too late for the specified video. i.e. not have to manually re-edit every individual sub timing)
2009-03-27 20:03:50 UTC in Open Subtitle Editor