Changing the font size in a pdf I must have done something which makes a gray dotted line appear here and there right through the text. (Maybe with page settings.) No matter what I tried, I haven't been able to get rid of it.
Any suggestions?
PS:
After a reboot the dotted line appeared at the end of the pages, so that is already a lot better. Then I changed the font to 100%, and that size is fine it turns out, and the dotted lines are gone.
Still don't know how it all works with so many icons for options... but I seem to get it the way I like it by trial and error anyway.