What are these lines, and how do I remove them?
Also asked at How do i delete the dashed lines from calc worksheet?. And related: How do I permanently turn off page breaks in Calc?.
These line show page breaks for the page size chosen. You can tun them off from menu
Tools->Options then under
LibreOffice Calc->View toward upper right corner under
Visual Aids is
Page Breaks. Just uncheck box.
If you are on Mac, menu selection is
LibreOffice- > Preferences then
If this answers your question please click on the (upper left area of answer).
Thank you, that seems to work.