Wikibooks:Dialog/do/test/preview

This page tests the content preview facility of action do. Fixed content is previewed twice, first with a non-live preview (in which ordinary buttons are disabled) and once in a live preview. Dialog parameters  and   are both defined, but the preview is only given permission to substitute in. Two buttons are provided, one specifying a subject page (from whose perspective the preview is done), the other with no specified subject (so the preview is from the perspective of the displaying page).