Hello, Ultima! First of all, thank you for this great tool, it's been really usefull. Lately i've been trying to code a similar program, but in c++ not autoit and I have a question that has been scratching my brain for some time. How is it possible that I load a ~6.6mb file in your program and still uses 500k of ram, i'm just filling the tree view with items, no other memory used for storing data, and it uses about 18mb of ram. So, please, teach me, master !