- (read\-only) This property gives the streaming requirement for this device\&. For example, tape drives often require a steady supply of data to avoid shoe\-shining, while disk devices have no such requirement\&.
+(read\-only) This property gives the streaming requirement for this device\&. For
+example, tape drives often require a steady supply of data to avoid
+shoe\-shining, while disk devices have no such requirement\&. Streaming is
+accomplished by buffering \fBdevice\-output\-buffer\-size\fR bytes of
+data\&. The allowed values are "none" (no streaming buffer necessary),
+"required" (fill the buffer before starting to write), or "desired" (fill the
+buffer before starting to write, and if the buffer becomes empty, stop writing
+until it is completely full again)\&.