Site operation
The site serves static pages through Cloudflare and the origin server. Requests include routine connection information such as IP address, time, requested path and browser headers in server/provider processing. This is needed to deliver and protect the website.
Analytics and cookies
No advertising or analytics scripts, analytics cookies or persistent browser storage are configured by this site. Cloudflare may use technical security cookies depending on the request and protection applied. See Cloudflare’s cookie documentation.
Tools
Calculator and worksheet data are processed in this page. Reloading clears the draft. Export creates a text download in your browser; the website does not receive the downloaded contents.
Search and reading controls
Search filters a catalogue served from this website. Search text, reading size and the home flow-demo inputs are processed in this page and are not stored or sent to a server. Opening a diagram retrieves its image from this website. Reloading resets the reading settings.
Outside links
Archive and primary-source links open third-party resources governed by their own policies. No third-party video player or live social feed is embedded.
Historical personal information
Comments, accounts and old contact mechanisms are excluded from the restoration. Historical professional bylines are retained to identify the work.