Example with mandatory variables not filled in

dynval1:                      # A dynamic family
  vardyn: example             # A dynamic variable
dynval2:                      # A dynamic family
  vardyn: example             # A dynamic variable

Example with all variables modifiable

var: val2                     # A suffix variable
dynval1:                      # A dynamic family
  vardyn: example             # A dynamic variable
dynval2:                      # A dynamic family
  vardyn: example             # A dynamic variable