JADE Environment Development Ideas

It would be useful if there was a way to create a rectangle subset of a picture loaded into a picture control while retaining any alpha channel settings for opacity. For ease of use, it would be good if this method let you specify the rectangle of the picture you want to use for the create, something along the lines of the following:

Picture::createPictureWithAlphaChannel( x, y, width, height : Real ) : Binary