Hi,
You can extract the XY coordinates as well as Z elevation for points with markers using the res11read.exe tool.
This tool is installed in the installation folder, and can extract some data from a MIKE 11 result file. To run this tool, you have to type the res11read.exe command from a DOS prompt: this will give you the various options available for extracting data from a result file.
This res11read.exe tool is also described in MIKE 11's manual.
It can't however return the XYZ data for all points given in a cross-section in the *.xns11 file.
Let us know if you need further help to use it.
Best regards,
Mathieu