Kimber, it's not MY definition. "Plugin" is an well known and universally accepted computer term. You seem to be the one pulling definitions out of thin air. I even gave you a link to the definition to educate yourself with. I happen to think educating people who display a lack of knowledge is nothing personal and it's a good thing. If I'd wanted to make a "Jab at you" I wouldn't have been so kind as to point you to the correct definition at Wikipedia.

Here's the definition of Tube if you can't find it:

PSP Tubes ( Paint Shop Pro Tubes )

There are currently thousands of graphic sites on the web containing 'tubes' across the web. The name 'tube' comes from the file extension .tub from the Paint Shop Pro photo/graphic editing program made by Corel. Graphics with transparent backgrounds can be 'stamped' onto layers and other graphics as different sizes in different layers, using tubes. Graphics that have transparent backgrounds such as .png, .pspimage, .gif, .tiff can be exported into the tube function. Jpegs can be 'tubed' to be transparent and exported into tubes. There are now programs available that are free created just for the purpose of making 'tubes' usable in other graphic programs, such as PhotoShop. Tubes are 'mouse drawn', made from other images, made from photographs, created from 3-D program images from programs such as Poser, DazStudio, Bryce and many more. You can find them free all over the internet ( Not always royalty free ). Tubes is one of the #1 growing graphic tool across the internet. From Fantasy art, scrapbooking, candy bar wrappers, banners and web design, sig tags, logos, and many other art and craft type projects, these graphics have endless uses. For larger lists of PSP Tubes, see results on google.

As you can see it's a graphic tool, but there's absolutely no computer code involved in Tubes.

It is a miracle that curiosity survives formal education. - Albert Einstein