An action is a button on a view that opens a publish form, pre-filled from where it was clicked. \"Add member…\" on a member list, \"edit…\" on a paragraph, \"approve\" on a pending term are all actions. An action names the template to open, which field of that template receives the page's resource, and who may see the button.

Actions are what make a page editable rather than merely readable: every change a visitor can make from a page goes through one, and each results in a new nanopublication.