I use data merge to create labels for guests attending functions. Usually this is around 500-1000 labels at one time. I usually set my text frame on the template page for a large point and then shrink it horizontally (I do this to minimize the number of pages I have to manually edit for overset text). I still get some names where they are long hyphenated names that create overset text.
Is there a script available where it will recognize there is overset text and then shrink the text down either by decreasing the point size or adjusting the horizontal spread of the text (maybe making it 100% to 80%)?
