WhatsApp: What do app's new forwarding rules mean – and why has it changed how you forward messages?

WhatsApp has introduced major new changes that are intended to stop people spreading messages so easily. The update is intended to stop the spread of false stories, bad advice and misinformation about the coronavirus outbreak as well as more generally. The feature might initially appear strange for a social network, which usually encourage easy ways of forwarding on messages and increase the reach of more popular posts. But WhatsApp has said the feature is specifically intended to "constrain virality", to keep the app "personal and private" as well as looking to slow the spread of hoaxes and rumours. What do the new rules mean?