Particle placement (Q, W, E, R): Particles are placed (key Q, W, E, R) into the simulation area based on the center of the particle using direction keys (right, left, up, down).

Particle rotation (1, 2, 4): Key 1, 2, 4 can be used to rotate a specific particle (particle Q, W, R) 90 degrees in clockwise direction.

Cell deletion (3): Key 3 is used to delete a single cell where cursor is on.

Clear screen (0): Key 0 is used to clear simulation area.

Generate new random particle (T): User can generate new particle-R using key T.

Generate new random particle and place randomly (Y): User can generate new particle-R and place randomly by using key Y.

Generate next step (space): When user presses space key, the next iteration of the simulation is calculated and printed.