WHO CAN HELP ME, DO NOT UNDERSTAND THAT THIS CODE

float normalizedX = norm(currentX, 0.0, 700.0); //that is 700?

float normalizedY = norm(currentY, 0.0, 700.0);

float normalizedZ = norm(currentZ, 0.0, 700.0);

float finalZ = map(normalizedZ, 0.0, 1.0, 300.00, 0.0); //that is 300?

float finalY = map(normalizedY, 0.0, 1.0, -3.5, 3.5); //that is 3.5 and -3.5?

float finalX = map(normalizedX, 0.0, 1.0, -3.5, 3.5);