What does "GND ", "GND*" or "GXB_GND*" mean in the All Package Pins of fitter report?

Description

You may see "GND ", "GND*" or "GXB_GND*" in the list of All Package Pins.  This list is shown in Fitter/Resource Section under Compilation Report or <design name>.fit.rpt under the project folder after you compile your design using Quartus® II software. 

Resolution

You can find the definition of  "GND ", "GND*" or "GXB_GND*" in the header of the Fitter/Pin-Out File under  Compilation Report or <design name>.pin under the project folder.