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diff --git a/decoders/guess_bitrate/__init__.py b/decoders/guess_bitrate/__init__.py
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+++ b/decoders/guess_bitrate/__init__.py
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+##
+## This file is part of the libsigrokdecode project.
+##
+## Copyright (C) 2013 Uwe Hermann <uwe@hermann-uwe.de>
+##
+## This program is free software; you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation; either version 2 of the License, or
+## (at your option) any later version.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+## GNU General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program; if not, write to the Free Software
+## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+##
+
+'''
+This protocol decoder tries to guess the bitrate / baudrate of the
+communication on the specified probe. Typically this will be used to
+guess / detect the baudrate used in a UART communication snippet, but it
+could also be used to guess bitrates of certain other protocols or buses.
+
+It should be noted that this is nothing more than a simple guess / heuristic,
+and that there are various cases in practice where the detection of the
+bitrate or baudrate will not necessarily have the expected result.
+
+The precision of the estimated bitrate / baudrate will also depend on the
+samplerate used to sample the respective probe. For good results it is
+recommended to use a logic analyzer samplerate that is much higher than
+the expected bitrate/baudrate that might be used on the probe.
+'''
+
+from .pd import *
+