These functions allow the user to set and retrieve the input that will be assigned to any conditions passed to make_plans() without plans (i.e., as unnamed arguments). Using the same inputting style as make_plans(), the argument new_plan will essentially be treated the same way a single named argument would be in make_plans(), without actually having a name/specific condition.
set_default_plan(new_plan)get_default_plan()
The input (in the style of named arguments to make_plans()) that will become the input of default plan.
set_default_plan() will invisibly return a "cleaned up" version of the input (i.e., evaluated, and with the unquoted terms replaced with strings), which is what will also be returned by get_default_plan() until a new default is set.