How to remove blue line grid over PDF text in Adobe?

[weird_blue_lines_in_pdf]

I was working on my Adobe and I pressed something like control + x or maybe a or maybe y and suddenly a small blue lines have appeared as a grid over my text. I turned off Adobe and turned it on again opening a new PDF file and the small blue line grid remains in other Adobe PDFs. What should I do? (Note I am using a MacBook Pro)

[try67 · Accepted solution]

Ctrl+U ...

[weird_blue_lines_in_pdf]

Awesome! Looks great! Thank you!

[Stephen22203869gzmd]

YAY!  Worked for me too!  So simple but took me days to find this solution.  THANK YOU

[Jude34740753iut9]

Ctrl+U worked for me too, thanks!

I was totally at a loss...

[annaa96502359]

It worked! I don't even know how I got the blue grid lines.

Thank you.

[try67]

You probably pressed Ctrl+U by accident...

[MichaelDargavel]

Ha.

I have been looking for this answer for a WEEK.

Thanks - so simple. I must have hit the ctrl+u by accident as well.

[Molebatsi0D4C]

Ctrl + U works...SPOT ON!!! 

Thank You!!!

[jvincent_vcmg]

Thank ou that seemed to work!

[williamm75606416]

5+ years later and I found myself in the same situation.  Thank you for this response.  I had no idea that was a function.

[Sam24381785wo1d]

AWESOME!!!! The lines were driving me CRAZY!!!

Thank you 

[jenlinck]

Weird. I had to do Command + U to get rid of them on my MacBook Pro. Ctrl + U didn't do anything.