Weird lines appeared in my .docx documents, when I open them in Word 2013:
Here I am asking, how did I get them in the first place? Because I am million percent sure that I haven't visited configuration windows or section neither in my Word 2010 nor Word 2013 for ages.
So, how it is possible that I see them now and haven't seen them yesterday or the day before yesterday? Is there some magic keyboard shortcut that I accidentally pressed that enabled them?