to Top Menu	Program "govlay" Overlay multiple GRID data sequentially with placing slit zone, and create new GRID data.
Working Dir.
LOG Filename
Name-label for new file	(areaname)
Projection number	(+800 for Old-TOKYO)
(Origin Lat. unless UTM)	(in deg. and min.)
(Origin Long. unless UTM)	(in deg. and min.)
Grid Location Parameters	/   SW corner Northing / Easting (km)      Mesh size (m) (common to NS and EW)    /   Number of mesh to N / E [count both ends]
Output Filename	(new)
Input source Filenames (6 files at most)