how to -- buffered read / write to stdio

From — "Pharo 7 file streams guideline"

https://github.com/pavel-krivanek/pharoMaterials/blob/master/Filestreams.MD I have some ideas like —    in := ZnFastLineReader on:       (ZnCharacterReadStream on: Stdio stdin).   out := ZnBufferedWriteStream on:       (ZnCharacterWriteStream on: Stdio stdout). What would be faster / better / more Pharo ways to do buffered reads and buffered writes to stdio ?