Your question is in the "Community Feedback" space where few will see it. To get better responses, you might follow the instructions here to move your question:
Also, you can add screen shots to your post, so we can understand "what lines" you are seeing (or want to see).
p.s. ediited: you may want to add a screen shot of the layout mode as well as the browse & preview modes.
Go to the Layout Setup, and turn off the option that says "Delineate fields on current record only".
Thank you for your post!
As beverly suggested, I'm going to move this thread from the FileMaker Community Feedback Space (which is specifically for input on the Community itself) to the Discussions Space where you should receive more views and potentially more feedback on this topic!