Basic stance, or Hanmi, is illustrated on this page

The principles of the posture are that the centre of gravity is low, body weight distributed 50/50 between front foot and back foot. The front knee is bent and the back knee straight, with the back upright, hips and shoulders facing forward. The feet are positioned as in the diagram, the front foot pointing straight forwards, the back foot at right angles to it, like a letter T.

The hands are held relaxed but with the fingers pointing forwards, at hip level. The posture is wide in order to lower the centre of gravity, aiding hip movement and balance.