code: def write(self,f):
          
          f.write("* singular value decomposition\n")
          f.write(IFMT(self.svdmode)+'\n')
          f.write(IFMT(self.maxsing)+' '+FFMT(self.eigthresh)+"\n")
          f.write('{0}\n'.format(self.eigwrite))
docs: write an SVD section to a file handle
  
          Parameters
          ----------
          f : file handle