Example with mandatory variables not filled in

dynval1:
  var: example                # A dynamic variable
dynval2:
  var: example                # A dynamic variable

Example with all variables modifiable

var1:                         # A suffix variable
  - val1
  - val2
dynval1:
  var: example                # A dynamic variable
dynval2:
  var: example                # A dynamic variable
var2: example                 # A variable calculated