@saintpaul wrote:
The macro are very simple. When opening the workbook it starts from one single row with around 200 (column) cells of formulas it copies down these cells for about 5000 rows and thus creates a bigger 5000*200 cells workbook in order to simulate an event. And when being saved the macro clears all the rows except for those at the beginning which at the next opening are needed to create the workbook again. By doing so the saved file is rather small. I have done this because your encryption for a secure file takes a lot of time. The bigger the file the more time your encryption algorithm needs.