Exporting with transparent background

How do you Export with transparent background? Toonboom shows it easily as a option. How ever I have having a really hard time with Pencil Check Pro. Thank you for your timeSamuel

This is not an option for Pencil Check Pro.~LillyToon Boom Support

cool ;D

This must be the only graphics oriented application on the planet that won’t let you have a key channel. I create a color layer behind my cels and use a color keyer during composite.