in wp, I now have a 'line' to left of text. What is it? How remove?t

Somehow I managed to insert a function which shows a line to the left of my wp text. Cursor can’t reach to remove.
When I try to add new text to the right of this line I get a colored, underlined text. I thought this might be hypertext and tried to remove, but can’t. I am a new simple-minded user and just learning. Can you tell me what the devil I did to add this feature, and how to remove it? Much thanks. pd.

Please edit your question (with the “slanted pencil” link) to provide more descriptive information, e.g. attaching a screenshot. Don’t forget to mention LO version and OS.

It sounds like you’ve accidentally activated the track changes feature.

You can toggle it on or off with Ctrl+Shift+C or using the menus, Edit/Track Changes/Record

To get rid of the vertical bar in the left margin and the colored text, Edit/Track Changes/Accept All