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* dit (.) refers to short and dah (-) refers to longMost right handed people use their right hand on the paddles. The THUMB is always used to send the dit and the INDEX FINGER for dah. * Right Hand Keyer - left paddle (thumb) is the dit / pushes right* Left Hand Keyer - right paddle (thumb) is the dit / pushes leftThe example is the less common lefty configuration. Reverse wires (A) and (C) for the more common right hand operation.The paddles should be wired with the "Dit" being made by the operator's right thumb and the "Dah" being made by the right index finger. This is a recommended way of doing it, however, there are some people that prefer to use their thumb to produce a dah rather than a dit. There is no rule saying you have to do it a certain way.The term "keyer" is generally used to refer to an "electronic keyer," which is a device that will generate dots or dashes depending on which of the two input switches is closed. Usually a device called a "paddle" or "bug" is used for input switching (sending). An iambic keyer is simply an electronic keyer that can be operated with a dual paddle.==Disambiguation==An electronic keyer can support the iambic sending technique, in which case it is an "Iambic Keyer." The term Iambic has nothing to do with the paddle. Iambic sending does requires a dual-lever paddle. A bug only has one lever and therefore cannot do iambic sending. You can use an iambic keyer as though it was a bug, but a bug cannot do iambic keying. There is a benefit to iambic keying only if the technique is adopted and the individual is skilled in the practice. Not all operators will master the iambic paddle and therefore any benefit may be impossible to perceive. It is true that fewer movements of the hand are required in order to generate any given piece of Morse code text. Four different CW Key types exist:#Straight Key#Semi-Auto Bug#Electronic Keyer#Iambic Electronic Keyer