Hi, all! mmap is a "file mapped in memory". mmap exist in Windows, and is implemented in several languages, like Python or Ruby. For AutoIt, I writed a little DLL. All is in the .zip attachment. For try: unzip mmap.zip in a dir of your choice launch read_mmap.au3 ({F1} for Quit) in another window, launch write_mmap.au3 Input your text to test, then {Enter} ('END' for finish) It's all. But, if you have Python, you can launch write_mmap.py in a third window If Autoit's developpers wan