Adding extra sharp edge to justified text?

A while ago I read about an easy way to make the right edge of a justified text 100 % ‘sharp’ (InDesign). I also tried it out and it worked fine adding an almost invisible extra quality to the pages I was working on. I didn´t use it however, since it also affected all the work I had already done with the justification. Apparently this has to be done as first thing.

But now I can’t remember how I did it or where I read about it.

Can anyone help?


maybe this is helpful…?