One page per screen, in the order the menu lists them. Each explains what the figures on that screen actually measure — which denominator a rate uses, which clock a date sits on, and why two similar-looking numbers in different places can both be right. Every screen also links its own guide from its header, so you rarely need this page twice.
/reports still resolves.
$0.00 — it
is a —, or a line telling you it needs finance access. Anywhere in this app, a
zero is something we measured.