====== Detail of the measure units employed by FFSM ======


===== Input =====
TODO

===== Output =====
In the results csv files:

  * ''vol'' - "volumes": Mm³ (at the end of the year)
  * `forArea` - "area": ha (at the end of the year)
  * `regArea` - "regeneration area": ha
  * `vReg` - "regeneration area": ha
  * `vMort` - yearly death volumes:  Mm³
  * `hV`  - "harvested volumes": Mm³ (assumed at the beginning of the year)
  * `hr`  - "harvested rate": ratio
  * `harvestedArea` - "harvested area": ha
  * `hProductivity`
  * `expReturns` - "expected returns": €/ha
  * `sumExpReturns`
  * `pol_fiSub` - Rate of subsides to forest investments: rate: [0,1[ → subside; 1 → no intervention; ]1,+inf[ → tax
  * `polBal_fiSub` - Amount of subsides to forest investments: M€



*  Some importan notes:
*    V (volumes)    -> at the end of the year
*    In (inventary) -> at the beginning of the year
*    Area           -> at the end of the year
*    Harvesting     -> at the beginning of the year
*    Volumes are in Mm^3, Areas in the model in Ha (10000 m^2), in the layers in m^2, vHa in m^3/ha. Prices are in €/m^3.
*    Policy balances (- -> public cost,subside; + -> public revenue) and surpluses are in milion €
*
*    BALANCE:
*    PROD_forLocal (sl) + PROD_forExp (sa) + IMP (da) + sum_reg(reg_trade_in) = CONS_fromLocal (dl) + CONS_fromImp (da) + EXP (sa) + sum_reg(reg_trade_out)
*    note that this means that sl includes alread reg_trade_out, and dl includes already reg_trade_in