The term procedure was changed to documented information in order to clarify that we can also have our instructions on flip charts, cards, videos, posters, signs, TV monitors etc. The point, as always, is that the information's user has ready access to clear, current, approved instructions. Control requirements in 7.5 apply, but not every document needs the same number or organizational-level approvals and obsolescence controls will also vary based on the media. I imagine these cards would function on the level of work instructions, which are also to be controlled but don't necessarily require the same methods as higher-level procedures. The organization decides the control methods.
An organization is also empowered to identify those with authority to approve the various kinds of documents. A past employer used a matrix approach for listing such approvers.