New variables

Variable	Description
leader.leader `string` `multiple` `standard` `mandatory` `unique`	A leader. Default: • value1 • value2
leader.follower1 `string` `standard` `mandatory`	A follower. Default: val11
leader.follower2 `string` `standard` `mandatory`	An other follower. Default: val21
calculate `string` `multiple` `standard` `mandatory`	A calculated variable. Default: the value of the variable "A follower"