GENERAL
------
1. All descriptions and fields should be written by lowercases.
2. All descriptions are optional. If you omit a description, the server will 
   use the default values.



   - plot_mode_2d should be one of followings
       0 Wire Frame
       1 Colored Wire plot
       2 Hidden Surface Elimination 
       3 Color Mapped
       4 Gray Scale
       5 Surface Plot
       6 Contour
       7 Point plot

