Hi guys, due to last week's discussions and some comments in the issue tracker, I wrote this morning the little improvement of the day: A simple BinaryFileStream. That is: A file stream that is - simple (no character encoding, no buffering) - binary (no automatic transformation to ascii characters) The good thing is that these features are not lost: this file stream is composable with Zn stream decorators: "encoding" fileStream := BinaryFileStream openFileNamed: 'test.txt'. writeStream := ZnCharacterWriteStream on: fileStream. writeStream nextPutAll: 'aáèOûï'. writeStream nextPut: $a. fileStream := BinaryFileStream openFileNamed: 'test.txt'. readStream := ZnCharacterReadStream on: fileStream. readStream upToEnd. "Buffering" fileStream := BinaryFileStream openFileNamed: 'test.txt'. readStream := ZnBufferedReadStream on:(ZnCharacterReadStream on: fileStream). readStream upToEnd. On the other side, this stream does not handle UI (like the old FileStream that e.g., asks the user if a file already exists), since I believe this is a concern that should be of the tools and not the file stream ^^. This is related to issue 15486. A slice is in the inbox for it if you would like to try. Guille