I am using Arnaud's ICLOOKUP.BGL specifically to take advantage of his 15% slope detection value. FSX has a feature that detects slopes on certain landclass textures (specified in ICLOOKUP.BGL). When the slope of a texture is more than this value trees, or other landclass, are inserted. For me the inserting of another landclass is not done well. Usually there are zig-zag patterns of the inserted patterns (usually trees). Thus farm fields show scattered trees in geometric blocks around the fields. The change by Arnaud helped but I want to try a more aggressive change. My question is, how do I de-compile ICLOOKUP.BGL? And, also any hint about what I will see if I can? I guess I need to recompile so is BGLCOMP the correct program to recompile ICLOOKUP?Thanks,DickRegards,Dick BoleyA PC, an LCD, speakers, CH yoke

Hi Dick,perhaps Arnaud will answer you directly but as far as I know he used a hex editor to determine the makeup of the lclookup.bgl and make changes to it. In other words, no de-compiling or re-compiling.Cheers, Holger