/**
 * Separator (horizontal rule / thematic break).
 * - Same as Markdown syntax but also allows `•` bullet character (in addition to `-` dash, `+` plus, `*` asterisk, `_` underscore).
 * - Character must be repeated three (or more) times.
 * - Character must be the same every time (can't mix)
 * - Might have infinite number of spaces between the characters.
 */
export declare const SEPARATOR_RULE: import("../MarkupRule.js").MarkupRule;