Specifies the view to use when rendering snapshots and movies. By default, both use a special “internal” view, which renders a separate snapshot per screen or renders movies only of the first screen. By specifying this option, you can override this default behavior and select a single view that will apply to all snapshots and movies.
Note that <viewname> does not need to be a perfect match; rather, it will select the first view whose name matches all the characters specified by <viewname>. For example, -snapview native will match the “Native (15:14)” view even though it is not a perfect match. <viewname> can also be auto, which selects the first view with all screens present.
The default value is internal (use the special “internal” view).
mess -snapview <viewname>
mess -snapview internal
mess -snapview auto