845a8e7d_ption___MuOnline_Pentium_Tools__Why_to_edit_
[File Location] \Data\World##\ [File Name] *.map [Description] In that file are the look of the ground of each map(like grass,rocks,road, water) [Why to edit?] 
Changing the ground of the map
MuOnline Files Description - MuOnline Pentium Tools
Why to edit?