docs: def get_svnpath():
      '''
      This subroutine gives back the path of the whole svn tree
      installation, which is necessary for the script to run.
  
      '''
      svnpathtmp = __file__
      splitsvnpath = svnpathtmp.split('/')
      if len(splitsvnpath) == 1:
          svnpath = os.path.abspath('.') + '/../../'
      else:
          svnpath = ''
          for i in range(len(splitsvnpath)-3):
              svnpath += splitsvnpath[i] + '/'
      return svnpath