Points of interests can be added in game using signs with keywords.
Place a sign in the chunk that is on the surface, it doesn't need to be visible in game. Type ".debug chunk" ingame to show the chunk border. On the first line enter <AM:BASE> and use the next 3 lines to add a label to the marker. The lines will be concatenated and separated with single space characters. this markers is intended for major POIs, visible when zoomed far out on the map. You don't need more than one for your base. Example:
<AM:BASE> Josh, Joel, Jesse & Cordelia
Place a sign near the minor POI, on the first line enter <AM:MISC> and use the next 3 lines to add a label to the marker. The lines will be concatenated and separated with single space characters. These markers are visible when the map is zoomed in. They are used to label minor points of interest such as individual landmarks in a player's base, roads, lakes, resources gathering areas such as salt domes, etc. Examples:
<AM:MISC> Public salt dome Free salt!
<AM:MISC> Drakker's wonderful pie oven!
To tag a translocators a sign must be placed within the same chunk as the translocator. Type ".debug chunk" ingame to show the chunk border. You can hide the sign in the ceiling or the floor if you want. On the first line enter <AM:TL> then on the second line enter a tag name, it can be anything. It will be used to classify translocators on the map. For example, the Official Public Test Server has an area called the temporal hub, all the transocators in this area are tagged with "HUB" and they are shown on the map in a different color. On the third and fourth lines enter a label for the translocator. This label will apear in the map object inspector when players hover over the translocator on the map with their mouse cursor.
Note : coloring translocators on the map is left to the discretion of the server admins and the web map managers, there's no guarantee that translocators you tag will get a unique color.
<AM:TL> SPAWN Spawn - Main Town
If enabled by the server administrator, you can create custom tagged markers. Place a sign and on the first line enter <AM:YOUR_TAG> where YOUR_TAG is any custom tag name you want to use. Use the next lines to add a label to the marker. The lines will be concatenated and separated with single space characters. These markers can be used to create custom categories of points of interest that can be styled differently on the map. Example:
<AM:SHOP> Bob's Trading Post
Points of interests can be modified in game by altering the text on their signs or moving them or removing them. It may take some time before the changes are reflected on the web map depending on how often we update it.