[sane-devel] Scanner panel buttons

[Matthew]

Is there some documentation regarding the use of the "Scan" and other 
buttons on the various scanners?  I assume that a standard is not in 
place so it would be a scanner-specific hack but I'm interested in 
getting the buttons to work.  I took a long look at the scanner kernel 
module and I see that there is basically no interface built.  There's a 
front panel buffer allocated but it's never used except as a 
placeholder.  So maybe a little info about what the scanner does when a 
button is pressed before I start sniffing the USB communication?

Matthew