MAX7219 and LED matrix

I have been trying out the MAX 7219 controlling an 8 x 8 LED matrix as described at;

and was wondering if anyone had used a modified version of this code to generate scrolling text. I find the code to be very neat and concise with its use of storing the font file in PROGMEM, the ease of inputting the text to be generated into the code and using SPI Trying to modify the code is well above my skill level but I thought that people other than me might be interested in this concept,or have some knowledge of how this might be achieved. Thanks for reading and hoping to hear from someone

BluesBoy.