# 4.6. Time Control

As an alternate to solution control, Fuego has a simplified `Time Control` block that can be used to set up time stepping parameters for simple, non-coupled problems. If your problem involves transfer, or if you want to be able to change time stepping parameters at different time periods you should use solution control.

    Begin Fuego Procedure Fuego_procedure

        Time Start = 0.0, Stop = 10.0, Status Interval = 10

        begin time control
            BEGIN TIME STEPPING BLOCK  time_block
                START TIME IS   0.0
                TIME STEP = 1e-3
                BEGIN PARAMETERS FOR FUEGO REGION fuego_region
                    TRANSIENT STEP TYPE IS automatic
                    CFL LIMIT = 5.0
                    TIME STEP CHANGE FACTOR = 1.5
                END   PARAMETERS FOR FUEGO REGION fuego_region
            END   TIME STEPPING BLOCK time_block

            Termination time = 1e6
        end time control

For the complete list of commands available in the time control block, refer to the command summary. The time control block lets you set the time stepping mode (`fixed` or `automatic`), the CFL limit, the initial time step, and the simulation end time.