"items" — the content form with explicit : source lines.
items is always non-empty: the content form requires at least one
line to parse.
"auto" — the content-less form, which shows the current page's image
attachments. files is null until data resolution fills it with the
attachment filenames (already sorted by the gallery's order).
Body of a
[[gallery]]element."items"— the content form with explicit: sourcelines.itemsis always non-empty: the content form requires at least one line to parse."auto"— the content-less form, which shows the current page's image attachments.filesis null until data resolution fills it with the attachment filenames (already sorted by the gallery'sorder).