1. What we use

These are the items stored in your browser:

• Session cookie: keeps you signed in. It is technical and necessary; without it you cannot log in.
• Security cookie (CSRF): prevents another site from submitting forms on your behalf. Also necessary.
• Browser local storage: keeps preferences such as language, light or dark theme, and local-mode diagrams. It never reaches our servers.

2. Why we do not ask for consent

The law requires consent for cookies that are not strictly necessary. All of ours are, so there is no banner to accept. If we ever add analytics or any non-essential cookie, we will ask before switching it on.

3. How to delete them

You can clear cookies and local storage from your browser settings. Doing so signs you out and loses saved preferences and any diagram that only exists in local mode.