# Show how to put multiple models, and how to write 
--- model tutorial04_models
''' The master model '''
config in   "Input file"
config out  "Output file"

|mplayer file=$in| --> |tutorial04_filter| --> |mencoder file=$out|


--- model tutorial04_filter
''' The filtering model '''

input  rgb        "Input image"
output processed  "The processed image"

|input name=rgb| --> |posterize levels=3| --> |output name=processed|
