# OUTPUT¶

This input block selects the type of output, which variables to output, how frequently, and in which format. See the following example:

OUTPUT
MASS_BALANCE_FILE
PERIODIC TIMESTEP 1
END
ECLIPSE_FILE
PERIOD_RST TIME 200 d
END
LINEREPT
SOLUTION_MONITOR
END


The instructions above require to output an ASCII mass file report (rates, total, fluid in place, etc.) at every time step, and to save the 3D solution every 200 days in a unified Eclipse file format. This is a standard Reservoir Engineering format which is accepted by many post-processors such as ResInSight.