Interval makeover

It never rains but it pours and files atrociously cued are often accompanied by gross violations of the two golden rules of interval aesthetics:

1.	Always make a fixed interval of X frames between two connected subtitles.

2.	All subtitles separated by an interval of of less than Y characters are considered to be connected and should be joined by an interval of no more or less than X frames.

TitleVision defaults are X=4 and Y=17. Some subtitlers, however, adhere to the "1 second rule", where Y=25.

In TV2003, the interval makeover routine is paired with the fit cues to scene changes routine. Combined the two make a formidable subtitling prettification tool.

The X variable is identical with the minimum interval defined in the Setup/preferences/time code menu:

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The Y variable is defined in the Video/Fit cues to scene changes dialog:

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If you don't want an interval makeover (but why wouldn't you?) just change the Upper Limit to 0.