2:
(2+ whitespaces)xx
Select “xx”, drag and drop it to just the beginning of the selection (between the whitespace and “x”).
** The 2 whitespaces before “x” are selected.
3:
These options in Start window do not work immediately:
Enable AutoRepeat handle in non-Cell Selection Mode
Drag selection border to extend/shrink selection
(I didn’t test others.)
4:
Open Start window. Ensure the lists have horizontal scrollbars.
Enable/disable “Size” (or “Type”, or “Date Modified”) from the context menu.
** All the horizontal scrollbars disappeared.