Create Bitmap Copy - Options Tab
This button duplicates Transparent background on the Palette Options tab. It provides compatibility for CorelXARA users.
If you set the Transparent option, any areas of the bitmap not covered by objects will be see-through. This generally means your bitmap is not rectangular. Only objects with no fill color appear see-through; objects with transparency applied are not see-through in the bitmap.
Tip
You can apply transparency to any bitmap, even if it does not have a background.