# Recalculate, Change Area Regions

## Recalculate area regions

When the roof calculation is recalculated, the area regions are lost because the roof may look completely different after a recalculation than before. In this case, select the "Recalculate area regions" function. The area regions will then be regenerated using the previous settings.

## Modify area regions

The automatically determined canopy areas can be manually modified with these functions to accommodate specific conditions. Once one of the functions is selected, the contour of the hinge position becomes visible because it will be altered by the subsequent functions. Changes made from the hinge position are then propagated to the other layers.
