Poynter: Vox.com recently made one of its signature digital resources available for wider use. The explainer-driven website modified its card stacks — a series of concise primers focused mostly on current events — to allow for embedding anywhere on the web. McClatchy’s Washington, D.C. bureau has begun including the card stacks in relevant national and world stories. Those articles, which will feature card stacks embedded using a shortcode, will then be distributed to the company’s local and regional newspapers across the nation.