A multiline(long text) column is perfect when you want to keep notes in each row. You can enter new lines and scroll if the text is longer than 5 lines.
To add a new multiline column, click the '+' button and select
After you add the column, you will see it in the Grid. Expanding a multiline column can be done by double-clicking it or pressing F2. This will open a popup with multiline text field.
Now, let's put some text.
Once we click on some other cell, the edit will be completed, and we will see the results in the cell as a single-line field. You can double click again on the cell to see the full text or move the mouse pointer over it.