R 1. CM OF LINE WIDTH 100 PAGES
WE ALL NEED TO HAVE GOOD VISUAL ACUITY TO BE ABLE TO DO SMALL WRITING.
BUT WHEN OUR VISION IS DEVELOPING OR WE HAVE SEVERE VISUAL PATHOLOGIES, WE NEED THE WRITING PLANE TO BE HIGHLY VISIBLE. 
THIS WAY WE CAN SEE THE LINES WHILE MAINTAINING VISUAL-MOTOR CONTROL DURING WRITING.
R 1. CM WIDTH OF LINE 100 PAGES
WE ALL NEED TO HAVE GOOD VISUAL ACUITY TO BE ABLE TO DO A LITTLE WRITING. BUT WHEN OUR VISION IS DEVELOPING OR WE HAVE SEVERE VISUAL PATHOLOGIES, WE NEED THE WRITING PLANE TO BE HIGHLY VISIBLE. THIS WAY WE CAN SEE THE LINES WHILE MAINTAINING VISO-MOTOR CONTROL DURING WRITING.