All Readable stream implementations must provide a `_read` method
to fetch data from the underlying resource.
-**This function MUST NOT be called directly.** It should be
+Note: **This function MUST NOT be called directly.** It should be
implemented by child classes, and called by the internal Readable
class methods only.
All Writable stream implementations must provide a `_write` method to
send data to the underlying resource.
-**This function MUST NOT be called directly.** It should be
+Note: **This function MUST NOT be called directly.** It should be
implemented by child classes, and called by the internal Writable
class methods only.
All Transform stream implementations must provide a `_transform`
method to accept input and produce output.
-**This function MUST NOT be called directly.** It should be
+Note: **This function MUST NOT be called directly.** It should be
implemented by child classes, and called by the internal Transform
class methods only.
* `callback` {Function} Call this function (optionally with an error
argument) when you are done flushing any remaining data.
-**This function MUST NOT be called directly.** It MAY be implemented
+Note: **This function MUST NOT be called directly.** It MAY be implemented
by child classes, and if so, will be called by the internal Transform
class methods only.