@foone yep. it exists. I typically use XMP metadata during image processing jobs, which has a text field for 'description' and many others. it's fairly standard for XMP tooling to be included in the app's base features.
> The Extensible Metadata Platform (XMP) is an ISO standard, originally created by Adobe Systems Inc., for the creation, processing and interchange of standardized and custom metadata for digital documents and data sets. https://en.wikipedia.org/wiki/Extensible_Metadata_Platform
oblomov