WASD is a system of PC gaming movement using the following:
- W - move foward
- A - move backwards
- S - move left
- D - move right
Combinations of keys (e.g., W+A) can move the character diagonally. The system is in place due to many first-person games using WASD for control, and the mouse for "looking" as the cursor is scrolled from left to right.
Often players will remap to ESDF in games to allow more keys to be pressed from left to right and place the index finger of the left hand on the home key F, and gives the pinky finger of the left hand the ability to use the A key in the game, along with Shift (used in many games).