Every page and its associated item data can be updated from within the website. When you are signed in with administrative privileges you'll see two extra buttons on each page. To the right of the page title you'll find an Update button which you can use to open the page editor.

Below the first block of text at the top of the related items list you'll find a button to "Add Related Topic." Click this button to open a related item selector where you can chose an item from a list, search the database for an item or create a new item.

Changes are logged and text can be rolled back to an earlier version if desired.

The satellite coordinates are maintanied graphically. Select the satellite image. Reposition the image and the zoom factor, scroll to the bottom of the page and click the Update button. The coordinates will be transferred to the item update page and can be saved or discarded.