Admin
The key is printed in the server window at startup and kept in SARMAT_admin_key.txt in the Saved Games folder — outside the site root, so it cannot simply be downloaded. The key is stored in your browser only and travels to the server just when you save.
Editing the guide
Guide sections are edited on the Server Guide page itself: title, text and picture for every block, with a Save button next to each. The key is the same one as here, and the page remembers it in your browser.
Header links
Three buttons in the top right corner, next to the language switch. A button appears only once it has an address: a button leading nowhere is worse than no button. Clear the field and the button disappears. The address must start with https://.
The logo next to the label appears by itself once logo_tacview.png is in the www/assets folder. Without the file the label stands alone, and that is not a fault: we do not draw other people's marks from memory or take them off their sites.