You must have a tired old brain like mine. I can still learn new things. But then learning anything newer than the new thing can be a problem.
you are not alone, I feel the same sometimes, and
Kelly Knows SomethingThe program follows the Windows standard for selection. Shift-Click to select a range, and Ctrl-Click to select individual items not in sequence.
In theory, Windows has also combinations of Ctrl+shift+click ...
click to select the first item
shift+click to select a range from the first item to another item
ctrl+click to select another "first" item (out of the range)
ctrl+shift+click to select another range (outside of the first range)
when you start using ctrl+click to deselect an element in a selected range and/or start ctrl+shift+clicking after that, you can get even more combinations of effects which are difficult/lengthy to explain but sometimes worth to try out :-)