Posted by member 1885 on 2006-02-07 16:29:20 link
From the xLabel 3.4.9 docs:
AlphaMap
If this command is present then the label uses a given AlphaChannel in the PNG images for painting Per-Pixel Alphatransparency.
AlphaMap
If this command is present then the label uses a given AlphaChannel in the PNG images for painting Per-Pixel Alphatransparency.