Today we’re bringing the discussion functionality that’s already in documents and presentations to spreadsheets. If a cell has a comment in it, you'll see an orange triangle in the upper right corner and when you hover over the cell you'll see the full discussion.
The total number of comments are also tallied up at the bottom of the screen on the sheet tab, and hovering over the comment icon shows all the comments on that sheet.
And just like you’re used to with comments elsewhere, you can +mention someone to automatically include them in a discussion and send them a notification via email—and they can even reply to the comment without leaving their inbox.
Any comments that were created in spreadsheets before today are still available and saved as “Notes”. These are shown in your spreadsheet using a black triangle in the corner of the cell to differentiate them from the new discussion-style comments. You can also create new notes from the “Insert” menu if you need to leave a quick annotation on a cell.
We hope discussions makes working in spreadsheets with others more fun and productive, and we look forward to making even more improvements to collaboration in Google Drive.
Posted by Patrick Donelan, Software Engineer