Asciio embedded in a PNG file

You can save your asciio document as a PNG, it will be recognized by image viewers; that also allows you to have a preview in your file manager.

You need to give the .pnge extension to the file you save (please note the final 'e'), this lets asciio know what you want to do. Your file will have the .png extension.

When opening a PNG file, asciio looks for its data and opens the file if it's present.