❖To save your model simply click the Save button in the ribbon above and the whole model is instantly saved as a .QubeXL file:
❖In the Environment tab you can specify the number of backups you want saved for your model; the default is 3 meaning it will keep 3 backups of the three previous versions of the file after you saved. These can then be restored at any time by simply opening them through the Open button in the Main tab:
