A post whose source is plain text, rather than a link to the website where it originally came from.
This includes file uploads, where the source is simply the filename used by the uploader, and posts where the source is a written description of where the image came from. Written descriptions are often used for self-scans, self-uploads, commissioner uploads, and self-datamined game assets. These things have no source link because they come from an offline source rather than another website.
Non-web sources should be avoided whenever possible. If you obtained the image from a website, you should post a link to the website where you obtained the image. Do not use a written description or filename for anything you obtained from another website, including scans and game assets.
