How do you draw lines with or without arrows in Libre Office Writer please?

This question might have already been asked and is not so difficult to answer. I just forgot somehow this very important feature and was eager to ask my first question here to see what happens. Anyhow, before someone answers or before I manage to review an answer to a similar question, I really do not know so yes please tell me how to draw the line. Thankyou.

Just draw the line as usual and edit its ‘Line…’ properties. (Rightclick while the object is recognised to get the context menu of the line object.)

For any drawing you have to make sure that > ‘View’ > ‘Toolbars’ > ‘Drawing’ is checked.