max brightness

[Brad Pitcher]

I was playing around with changing the brightness by putting number in 
the brightness file under /sys/class/... and I noticed that I'm not 
allowed to write anything higher than 63.  Is that the max brightness?  
The only reason I have doubts about it is because 63 seems to be such an 
arbitrary number.  I would like to know if it's possible to make it even 
brighter.
cheers,
Brad