The method we just
used to create the freehand sketch is known as the interactive
method, where we use
the cursor to specify locations on the screen. This method is
perhaps the fastest
way to specify locations on the screen. However, it is rather difficult
to try to create a
line of a specific length by watching the displayed coordinates. It would
be helpful to know
what one inch or one meter looks like on the screen while we are
creating entities.