Please consult also the Users’ guide. The Display calculation tool enables all participants to import data and to export them in a spreadsheet format. Importation enables you to make hundreds of calculations at once. Be careful ! This function is very powerful but also potentially very dangerous for your data. These manipulations are made at your own risk. You can lose data if you do not use it properly.
We highly recommend you to :

 always save your data in .csv format

 use OpenOffice scalc as your spreadsheet manager

 have used Display enough to know it well (at least 20 buildings and 30 calculations entered)

 contact the Display team in case of a problem