{ 
  s_m_m2io_version
  :::
  2.0.0 
} 

f_m_table { 
  :::
  m_column[1] { 
    s_m_data_name
    s_m_column_name
    i_m_width
    b_m_visible
    :::
    1     i_m_feature_def_id "feature def id" 10    1     
    :::
  } 
  m_row[2] { 
    i_m_feature_def_id
    :::
    1     1     
    2     2     
    :::
  } 
  m_exists[2] { 
    s_m_exists
    :::
    1     1 
    2     1 
    :::
  } 
} 

