Search text. Operators such as `insource:`, `incategory:` and `intitle:` work. A plain `insource:/.../` regular expression can be slow; prefer words or `insource:"..."`. At most 300 characters.

Wikimedia edition code, e.g. `en`, `de`, `ja`, `simple` or `zh-min-nan`. Default: `en`.

Results per page, 1 to 500. Default: 50.

First result to return, 0 to 9999. Use `cursor` to continue a walk.

Result order: relevance (default), create_timestamp, incoming_links, last_edit, title_natural, just_match, none or random, optionally with `_asc` or `_desc`.

Namespace id, e.g. `0` for articles or `14` for categories.

Cursor from `page.nextCursor` of the previous response. It only works with the same filters. Rankings can shift between pages, so a title can repeat at a page boundary; de-duplicate by `pageId`.