-`.add_mrkr`: Adds markers. You can use `.add_mrkr x,y,z Marker name` to add markers. Markers are (currently) cross-server, and adding a marker with (exactly) the same name as another will overwrite the original marker. If you replace `x,y,z` with `here`, the marker will be set to your current position, and replacing it with `there` will set the marker to the last `.coords` position.
-`.mrkr_export`: Exports your markers to an advmarkers string. Remember to not modify the text before copying it.
-`.mrkr_import`: Imports your markers from an advmarkers string (`.mrkr_import <advmarkersstring>`). Any markers with the same name will not be overwritten, and if they do not have the same co-ordinates, `_` will be appended to the imported one.