Requirements+specification

Think in terms of the:

 * ===design requirements===
 * ===input requirements===
 * ===processing requirements===
 * ===output requirements===

Objective:

 * === screen is 500 x 500 pixels ===
 * === icons are 20 x 20 pixels ===
 * === text is black (RGB: 0,0,0) ===
 * === 'ball' is red (RGB: 255,0,0) ===
 * === there is a screen to add another user ===
 * === navigation to next screen is by button placed on bottom right of the screen ===
 * === etc. ===

Subjective

 * === design is user friendly ===
 * === it is easy to add another user ===
 * === etc. ===