Index: src/OFStdIOStream.h
==================================================================
--- src/OFStdIOStream.h
+++ src/OFStdIOStream.h
@@ -16,10 +16,13 @@
 
 #import "OFStream.h"
 
 /*!
  * @brief A class for providing standard input, output and error as OFStream.
+ *
+ * The global variables @ref of_stdin, @ref of_stdout and @ref of_stderr are
+ * instances of this class and need no initialization.
  */
 @interface OFStdIOStream: OFStream
 {
 	int  _fd;
 	bool _atEndOfStream;