Media objects (both the mediaobject and inlinemediaobject containers as well as the imageobjects etc. inside them) are processed in this mode immediately after the start tag. Templates in this mode can output attributes, such as summary or alt, as well as additional accessibility elements; it may also be used to output legal notices, etc. that should precede the primary content.

If the $mediaobject-accessibility parameter includes a11y-metadata then any short accessibility summary will be output in a meta element with the property value a11y:accessibilitySummary. In addition, any meta elements in the info will be processed in this mode as well (so they can also be output using accessibility meta properties. See also m:mediaobject-end.