Issue: you want to force a command to repeat itself after you finish using it.
Solution: entered the MULTIPLE command in before you start the LINE command. Now you draw your first line, but when you press the Escape key, the LINE command starts again and you are prompted for the first point of the line. When you are completely finished drawing lines, press the Escape key a second time to end the MULTIPLE command.
This command works with all drawing commands (Arcs, Circles, Ellipses, Lines, Rectangle, etc.), Text commands, Match Properties, and even the COPY command. Please note that it does work with the Dimension commands, but unless you are entering multiple, separate dimensions, it is better to use the DIMENSION CONTINUE command.