úÎ}ÌGHC onlyjmillikin@gmail.com IA knob is a basic virtual file, which contains a byte buffer. A knob can  have multiple 4s open to it, each of which behaves like a standard  file handle. Use   and  to inspect and modify the knob s  byte buffer.  Create a new  pointing to a . This handle behaves like ) a file-backed handle for most purposes. !Filename shown in error messages See . "Filename shown in error messages.     knob-0.1 Data.KnobKnobnewKnob getContents setContents newFileHandlewithFileHandleDevicebaseGHC.IO.Handle.TypesHandle System.IO checkOffset setDeviceSize