內容
//-----------------------------------------
// GRF List
//-----------------------------------------
//grf: C:\path\to\RO\data.grf
//grf: C:\path\to\RO\mapp.grf
// You may add more in this format
// grf: <data file path>
//------ Others ---------------------------
// Data Directory (without the actual data\ though)
the below example would use C:\path\to\RO\data\
data_dir: C:\path\to\RO\