I just want to make sure that I’m not doing something wrong nor missing any feature of the program.
Are the following statements true?
A line cannot be flip along a axis like you do with a close face.
Possible workaround: using scale and typing -1 as value
I cannot apply offset tool on a line.
Possible workaround: I can move it with ctrl modifier to make a copy and then type the lenght for the distance.