Using the PolicyEngine web app (policyengine.org) to analyze how tax and benefit reforms affect
a household or the whole population — the household calculator, the policy editor, and
society-wide impact charts. For people using the site, not building it.
Triggers: "how to use PolicyEngine", "household calculator", "build a reform on the website",
"policyengine.org walkthrough", "web app guide", "share a reform link", "read the impact charts".
