Images can be inserted (after they have been uploaded)
Drawings can be added to the maps or satellity imagery. Various colours and grades of opacity/transparency are available. This allows indicating routes and areas.
Spots and labels can be placed in the maps or satellity imagery. (The same variety of colours and grades of opacity/transparency are available) This allows indicating additional places of interest.
All of these can be changed from the entries' maintenance page, which is linked to from the entries' page itself. (Only the name itself cannot be changed).
Website visitors can add new entries freely.
When they do so and they are logged in, they can choose whether other visitors can also make changes to the entry.
Entries and their attributes can be changed at any time.
Visitors can register a login-id by providing their email address only.
A logged-in visitor can reserve the right to make changes to the entry, so that other visitors cannot change the entry.
A signed-up visitor obtains a special page for themselves, the name of which consisting of "member_" followed by their login id. Only they can change this entry. The entry has links in the sidebar to entries created by, and updated by, the visitor.
Visitors can add tags to entries. This allows creating ad-hoc groups, "folksonomy"
There is a list of special tags
When an entry is tagged with one of these words, then all entries that it links to will get a back-link in the top section, which reads "listed in ....". This allows a weak form of location breadcrumbs.
If entry A links to entry B, then a marker will appear in the map or satellity imagery for entry B at the location of entry A; and vice versa. Hovering the mouse over the marker will make a box appear with the title of entry B, and a link to it. In this way related entries are easy to spot geographically.
For each entry a history of its revisions is maintained. These versions can be inspected and reverted to if needed.
KML Support: "Google Earth"
Each entry is accessible as both an html file and a kml file. A link to the KML file is in the sidebar when the html file is shown in a webbrowser.