Note: This is taken from the Chicken Wiki, where a more recent version could be available.
NeuroML is a family of XML-based description languages for defining and exchanging neuronal cell, network and modeling data including reconstructions of cell anatomy, membrane physiology, electrophysiological data, network connectivity, and model specification.
ChannelML is a part of the NeuroML framework, and its primary purpose is to describe ion channel models.
nnweave is a program that reads a ChannelML description and generates a corresponding description in the NMODL language for the NEURON simulator.
nnweave [options...] <list of files to be processed>
The following options are recognized:
Ivan Raikov
nnweave is based on the MorphML_v1.6_NEURON and ChannelML_v1.6_NEURON XSLT transformation stylesheets by Padraig Gleeson (Copyright 2007 Department of Physiology, UCL).
Copyright 2008 Ivan Raikov and the Okinawa Institute of Science and Technology.
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 3 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.
A full copy of the GPL license can be found at <http://www.gnu.org/licenses/>.