How to change the rail horizontal offset. Warning: the next section will give you a headache. ** To change the plan offset of a rail is confusing: There is an instance property for each railing, but using instance properties for such global changes is a nightmare for inconsistency.
Simplex is a communications mode in which only one signal is transmitted, and it always goes in the same direction. The transmitter and the receiver operate on the same frequency.
Simple machine. A simple machine is a mechanical device that changes the direction or magnitude of a force. In general, they can be defined as the simplest mechanisms that use mechanical advantage (also called leverage) to multiply force.