LyCheSis:showCase

Something small but usefull is the String.Format function, with which you can format your numerical outputs:

using System;
using System.Collections;

...

// formatted float with three zero padded digits
// in front of the "." and three digits after it.
debugText += String.Format("H{0:000.000}\n", heading);

// formatted int with formats for positive;negative;zero values
debugText += String.Format("S{0:+000;-000; 000}\n", speed);