Window metadata for user assistance

Some user assistance topics might need to be displayed in a specific window or viewport, and this windowing metadata can be defined in the DITA map within the <ux-window> element.

In some help systems, a topic might need to be displayed in a window with a specific size or set of features. For example, a help topic might need to be displayed immediately adjacent to the user interface control that it supports in a window of a specific size that always remains on top, regardless of the focus within the operating system.

Application metadata that is specified on the <ux-window> element is closely tied to that specific application. It might be ignored when content is rendered for other uses.