Yesterday I tried to figure out why my Mathematica file reached a gigantic size of 54 MB. By deleting, it would seem, all the graphs and tables with the results of calculations, I was able to reduce the file size to 37 MB. After examining the contents of the file in a text editor, I discovered mysterious arrays of numbers. Fortunately, I guessed to climb the menu, where I found the item
Cell | Delete All Output. After applying this menu item, the file size immediately decreased to 700 kB, and the mysterious arrays of numbers inside the file disappeared. With that in mind, my first question is:
What were these arrays and how could they appear?
In the same
Cell menu, I noticed the
Notebook History item. After playing around with this item, I found out that there are cells in the notebook created back in 2007. After clearing the history, I reduced the file size to 300-400 kB. In this regard, my second question is:
Why save notebook history? The help says that saving history can be disabled. Can you give an example of the practical benefit of preserving notebook history?