For those who, like myself, keep a detailed KTB and want to record events in a more accurate Grid area, this information will put the "Gridxxxx" overlay by Tycho in the correct position on the Nav Chart.
After you paste the layout data in Data/Menu/menu_1024_768.ini, it should be labeled as "G31 I32" and the position line should be changed to read "Pos=350,1975,714,922".
You will find the pull-down tab at the top of the Nav Chart, just to the right of the "Depth Thingy".
Good Hunting!