In the tab script, a LUA-script can be entered to calculate rates. If a script is entered here, it will be called up everytime a rate is to be calculated for this package. The script itself then uses a number of pre-defined values to calculate the rate and forwards the rate to SIHOT.
The programming of a LUA-script requires specific programming skills. Further information on embedding LUA-scripts for rate calculation is available in the SIHOT Technical Manual.