Map markers in the Map Control Panel can be as long as 24 characters but when they are longer than 20 characters they do not display correctly in the Map Control Panel window when you click them. Markers less than 20 characters all fit on one line in the info window at the bottom of the MCP and the second line shows the coordinates where the marker was created. But if a marker is longer than 20 characters part of the name get shifted onto the line that normally shows the marker's coordinates and the coordinates get shifted down to a spot where they cannot be read.
The MCP window cannot be expanded wider either so there is no way to read the coordinates of any marker longer than 20 characters.
