Limiters

In CLEM, activities are all independent in that they don't know what other activities are doing. This raises some issues when we need to apply a rule across a range of activities. One such scenario is when there is an upper limit on how much material can be cut and carried in a time-step across all activities. To achieve this you can add a Cut and Carry Limiter to the simulation tree structure and set the limits in the parameters. All activities that undertake cut and carry will obey this limit. Other limiters may be added in future as required.