```
case "define" then
// default values
x0 = [0; 0]
k_stiff = 1
// create object
model=scicos_model()
// provide name and type
model.sim = list("SCGNC_example_sim",5)
// define inputs and outputs
// one inputs with a variable size "double" element
model.in = 1
model.intyp = 1
// one output with a single "double" element
model.out = 1
model.outtyp = 1
// set initial state
model.state = x0
// set default parameter
model.rpar = k_stiff
// define block properties
model.blocktype = "c"
model.dep_ut = [%t %f]
// set block properties
exprs = ["[0.0; 0.0]";"1.0"];
x = standard_define([4 4],model,exprs)
x.graphics.style = ["blockWithLabel;displayedLabel=SCGNC_example"]
```

1-I have read the model define but I did not understand the

evtin,evtout,state,rpar, all the other but there is no example and how certain value in **rpar,exprs,state** came?

2- How to define such value and what/why shape/size of the **rpar,exprs,state** are obtained?

3-From where the value came?