5 5 52   Python 
  This command generates 'FILE.py' file which can 
be used as input file for Python graphical system.
In particular it  contains instruction to read
'FILE.tab' generated by upper level menu function. 
The user can edit 'py' file to improve  plot
visualization. To work with Python use command 

    python FILE.py

PDF  file FILE .pdf is generated automatically
See 
  https://matplotlib.org/1.2.1/api/pyplot_api.html
for Python instructions
