Transparency between classes

[Leonardo Andrade]

Hello,


We have layers with many classes (several dozens in some cases), and we 
managed to have transparency between diferent layers with the tag 
"TRANSPARENCY"  inside the layer. However,  we need transparency between 
classes.
Using outputformat png 8 bit (PC256), the transparency between classes 
works fine, but in RGBA mode it does not. And we must have RGBA format 
because in the 8 bit format the color table limits the avaliable colors.


One solution is to one layer for each class, but it looks ugly.


Did anyone have this problem already?

Regards,

--
Leonardo Andrade