old_contents: 
  '''
  .. module:: skrf.vi
  ========================================================
  vi (:mod:`skrf.vi`)
  ========================================================
  
  This module holds Virtual Instruments, which are generally controlled 
  by GPIB/VISA commands. You must have a working VISA to use these 
  classes. See .
  
  
  .. automodule:: skrf.vi.vna
  .. automodule:: skrf.vi.sa
  .. automodule:: skrf.vi.stages
  
  
  
  
  '''
  __test__=False
  all = ['vna','sa','stages']
  
  
  
new_contents: 
  '''
  .. module:: skrf.vi
  ========================================================
  vi (:mod:`skrf.vi`)
  ========================================================
  
  This module holds Virtual Instruments, which are generally controlled
  by GPIB/VISA commands. You must have a working VISA to use these
  classes. See .
  
  
  .. automodule:: skrf.vi.vna
  .. automodule:: skrf.vi.sa
  .. automodule:: skrf.vi.stages
  
  
  
  
  '''
  __test__=False
  all = ['vna','sa','stages']
  
  
  
subject: Remove trailing whitespace