This function allows you to specify the extent of the software’s 'pre-calculation function' for each optimisation run. Like a chess game programme, the Untis programme calculates before each 'move' (i.e. before each placement of a lesson) how the move will affect the situation as a whole. Depending on the computer, the size of the school and the figure entered for this option, the optimisation of a timetable can take between a few seconds and a few minutes. As a general rule, the longer it takes the computer to come to a result, the better the final outcome. In the early stages of a timetable construction, however, long optimisation runs are often counter-productive, since initial results often indicate that certain changes need to be made regarding the input data.
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