pub const DELTA: &str = "delta";
pub const LEVEL: &str = "level";
pub const NUMBER: &str = "number";
pub const CHECKED: &str = "checked";

pub const COLLAPSED: &str = "collapsed";
pub const LANGUAGE: &str = "language";

pub const ICON: &str = "icon";
pub const WIDTH: &str = "width";
pub const HEIGHT: &str = "height";
pub const URL: &str = "url";
pub const CAPTION: &str = "caption";
pub const ALIGN: &str = "align";

pub const PAGE: &str = "page";
pub const HEADING: &str = "heading";
pub const PARAGRAPH: &str = "paragraph";
pub const NUMBERED_LIST: &str = "numbered_list";
pub const BULLETED_LIST: &str = "bulleted_list";
pub const TODO_LIST: &str = "todo_list";
pub const TOGGLE_LIST: &str = "toggle_list";
pub const QUOTE: &str = "quote";
pub const CALLOUT: &str = "callout";
pub const IMAGE: &str = "image";
pub const DIVIDER: &str = "divider";
pub const MATH_EQUATION: &str = "math_equation";
pub const BOLD: &str = "bold";
pub const ITALIC: &str = "italic";
pub const STRIKETHROUGH: &str = "strikethrough";
pub const CODE: &str = "code";
pub const UNDERLINE: &str = "underline";
pub const FONT_COLOR: &str = "font_color";
pub const BG_COLOR: &str = "bg_color";
pub const HREF: &str = "href";
pub const FORMULA: &str = "formula";
pub const MENTION: &str = "mention";