Why This Message in My Spreadsheet?

As my spreadsheet grows downwards with the passing of time I typically drag the black square in the corner of a cell downwards and that way copy the cell formula down.
This time it has worked alright but I’ve got a message in yellow that I don’t understand the significance of. Is it merely information or some kind of warning?
Does it indicate something wrong?
And what’s the mention of ‘change’? I really changed nothing unless from blank to a formal counts as ‘change’.
Hmm. I took a screenshot but now I find no way to add it to the post.
So I’ve put it on imgur. Here:

You have turned on Track Changes. To toggle track change click Edit > Track Changes > Record to unhighlight it. The changes recorded (the yellow comment, not the entry) will be removed after OK on the new dialogue box. Cheers, Al

1 Like

thank you, Al. sets my little mind at rest. :slight_smile: