Function change 

pub(crate) fn change(verb: &str, json: &str) -> String

A choice of the tab, or one of Android’s pages (AppNotesSetup.act): the tab again, as JSON. “set” {key, value}: “hold”, app.<package>.kind, app.<package>.area, conversation.<key>, site.<host>; “open-access”, “open-info”, “open-app” {package}, “open-channel” {package, channel}; “contacts”.