(zettel (meta (back "00001007700000") (backward "00001007700000") (box-number "1") (created "20230707205246") (forward "00001006034000 00001006035500 00001007701000 00001007710000 00001007720000") (modified "20240219161813") (published "20240219161813") (role "manual") (syntax "zmk") (tags "#manual #search #zettelstore") (title "Query: Action List")) (rights 4) (encoding "") (content "With a [[list of zettel identifier|00001007710000]], a [[query directives|00001007720000]], or a [[search expression|00001007701000]], a list of zettel is selected.\n__Actions__ allow to modify this list to a certain degree.\n\nWhich actions are allowed depends on the context.\nHowever, actions are further separated into __parameter action__ and __aggregate actions__.\nA parameter action just sets a parameter for an aggregate action.\nAn aggregate action transforms the list of selected zettel into a different, aggregate form.\nOnly the first aggregate form is executed, following aggregate actions are ignored.\n\nIn most contexts, valid actions include the name of metadata keys, at least of type [[Word|00001006035500]] or [[TagSet|00001006034000]].\n\nTo allow some kind of backward compatibility, an action written in uppercase letters that leads to an empty result list, will be ignored.\nIn this case the list of selected zettel is returned."))