#    grid_size_x grid_size_y
grid          40          40

#      index    x    y type   r   g   b
device     0    0    0    2   0 255   0
device     1 -500 -500    4 255 255   0
device     2  500    0    1 255   0   0

#         from to   r   g   b
data_line    0  1 255 255   0
data_line    2  1 255   0   0

