Example with mandatory variables not filled in


---                                                                             
var1: a_choice                # The first variable                              
var2: a_choice                # The second variable                             



Example with all variables modifiable


---                                                                             
var1: a_choice                # The first variable                              
var2: a_choice                # The second variable                             
var3: a_choice                # The third variable                              
var4: a_choice                # The forth variable                              
var5: a                       # The fifth variable                              
var6: 1                       # The sixth variable