text: #
  # Copyright (c), 2015-2020, Quantum Espresso Foundation and SISSA (Scuola
  # Internazionale Superiore di Studi Avanzati). All rights reserved.
  # This file is distributed under the terms of the MIT License. See the
  # file 'LICENSE' in the root directory of the present distribution, or
  # http://opensource.org/licenses/MIT.
  #
  # Authors: Davide Brunato
  #
  
  ###
  # XML Schema namespaces
  
  XSD_NAMESPACE = 'http://www.w3.org/2001/XMLSchema'
  "URI of the XML Schema Definition namespace (xs|xsd)"
  
  XSI_NAMESPACE = 'http://www.w3.org/2001/XMLSchema-instance'
  "URI of the XML Schema Instance namespace (xsi)"
  
  XML_NAMESPACE = 'http://www.w3.org/XML/1998/namespace'
  "URI of the XML namespace (xml)"
  
  ###
  # QE namespaces
  
  PW_NAMESPACE = "http://www.quantum-espresso.org/ns/qes/qes-1.0"
  "URI of the Quantum Espresso namespace for PW application"
  
  PHONON_NAMESPACE = "http://www.quantum-espresso.org/ns/qes/qes_ph_1.0"
  "URI of the Quantum Espresso namespace for Phonon application"
  
  NEB_NAMESPACE = "http://www.quantum-espresso.org/ns/neb"
  "URI of the Quantum Espresso namespace for NEB application"
  
  TD_NAMESPACE = "http://www.quantum-espresso.org/ns/neb"
  "URI of the Quantum Espresso namespace for TDDFPT application"
  
  TD_SPECTRUM_NAMESPACE = "http://www.quantum-espresso.org/ns/qes/qes_spectrum-1.0"
  "URI of the Quantum Espresso namespace for turbo-spectrum application"
  
  # XSpectra namespace
  XSPECTRA_NAMESPACE = "http://www.quantum-espresso.org/ns/qes/qes_xspectra-1.0"
  "URI of the Quantum Espresso namespace for XSPECTRA application"
  