Example with all variables modifiable

---                                                                             
var1:                                                                           
  - 0.0                                                                         
var2:                                                                           
  - 0.0                                                                         
var3:                                                                           
  - 0.0                                                                         
var4:                                                                           
  - 10.1                                                                        
var5:                                                                           
  - 10.1                                                                        
var6:                                                                           
  - 10.1                                                                        
var7:                                                                           
  - 0.0                                                                         
var8:                                                                           
  - 0.0