The Wang Collection Trees & Plants Volume 1 contains 112 hand rendered trees and plants for use in Non-Photorealistic Renderings. Alpha Masked PNG files may be used in most Rendering Programs Piranesi Style Files included for easy use in Piranesi. NOTE: Please ensure that your software application supports your selected file type. Please note that most Corel® application will not read PNG file types. If you wish to use PNG files with Corel® product, you would need to convert the provided PNG files to TIF or PSD files using a batch converter either in Photoshop® or free software available on the internet.