How do you select and unselect?
Pressing the Ctrl key, you can click, or click-and-drag to deselect any cells or ranges within a selection. If you need to reselect any of those cells, continue holding the Ctrl key and reselect those cells (for Mac, use the Cmd key).
Is deselect opposite of select?
If something has been selected then it can be deselected. Deselect is the antonym of select so it is used in the opposite case of select word. Unselect means to remove the mark from a tick box or to cancel the previous selection. If something has never been selected at all then it is being unselect.
What is the opposite of select all?
Select None would be so that (in software terms) that NO categories are to be selected at all. Unless you assign it a specific language code (for example) to make it do the same as Clear/Deselect All. especially for select none, which is common.