The finger which strikes the letter "M" on the typewriter normally sits on which letter in the normal "at rest" position?

The standard method for typing on a QWERTY keyboard is based on the "home row," a specific line of keys where the fingers rest. This position acts as a central base from which all other keys are struck. For the right hand, the fingers are placed on the J, K, L, and semicolon keys. The right index finger, which is responsible for a significant portion of the keyboard, has its designated resting spot on the "J" key.

When a touch typist needs to strike the letter "M," which is located on the bottom row, it is the right index finger that makes the journey. It moves down one row and slightly to the left from its home on the "J" key to press "M" before immediately returning to its resting position. This system of a consistent home base allows typists to develop muscle memory, enabling them to type with speed and accuracy without ever looking at their hands.

As a clever design aid, most keyboards feature a small raised bump or ridge on both the "F" and "J" keys. These tactile markers are not a defect; they exist specifically to help a typist find the proper home row placement by feel alone, reinforcing the central role these two keys play for the index fingers.