Tile Groups (.lgr)

Groups of interchangeable tiles are stored in ./iso/let/<name>.lgr (GroupFormat=lgr in iso.ini). Unlike most of the engine's formats, a .lgr file is plain INI text. The engine treats the members as variants of one tile.

[GROUP]
Type=2
FileCnt=72
File0=0 0 1_6.let
File1=0 0 1_2.let
File2=0 0 1_3.let
...

Each File<n> entry is offsetX offsetY <name>.let, and FileCnt is the number of member tiles. For example, Wasser_NEU.lgr groups 72 water tile variants.