How does “Group papers, queries and the auditor's seat” work on the Audit page?

A group paper builds the same paper for every company and lays the rows side by side with a group column — directors' pay, related parties, leases, HP, corporation tax, provisional accounts, intercompany with every balance paired to its mirror, the analytical review, WIP, going concern, policies, provisions, loans, the representation enquiries. Each is cached with a watermark of when and from what it was built, rebuilds itself when a company's inputs or ledger change, and exports as Excel. A query from the auditor lands on the paper it concerns, is answered there, and can be drafted from the papers — the figures and their sources, with a What is missing panel naming the gap and where to fill it. Confirmations go out from the run with a record of what was sent, or are marked as sent outside Saral. The auditor's seat reads the run, drops documents and asks; it does not edit a paper. Where: Audit (/accounts/audit-runs).