The short description describes the content of the document. This information is typically displayed in document lists, where the name is rendered side by side with the short description.
The short description is a short paragraph of one to three sentences. It describes the content of the document and is a tool for the readers to determine, if they are interested to read the document or skip it.
Typically short descriptions are displayed on top of a document and in document lists. The short description is rendered together with the name and maybe more metadata from the document's properties. This supports readers with navigating the documentation.
For information on how to write expressive short descriptions, please have a look at Writing Short Descriptions.