The publication / Privacy
A simple boundary for this preview.
This local edition does not collect subscriptions, contact messages, analytics events, or calculator inputs.
Calculator and browsing
The calculators and worksheets run in your browser. They do not send inputs or notes to a server or save them in browser storage. You can download a scenario or worksheet yourself; those files are saved by your browser. The site does not retain this work for your next visit; download anything you want to keep. This site sets no analytics cookies or tracking identifiers, uses system fonts, and serves its photographs and illustrations locally.
Forms
The local preview server rejects form submissions as unavailable. It does not forward them to an email or contact service, and the form will not claim that a subscription or message was accepted. Use sample information when reviewing the form layout.
External sources
Source links take you to another website when clicked. Those sites have their own privacy practices. Linking to a document does not mean its services are active here.
Before publication
Any future newsletter or contact service needs a named responsible operator, a working contact route, consent records, retention rules, deletion handling, and an accurate service-provider notice. This page describes the current local preview only.