CTRL+A – this has various scenarios:
a. If you are in regular data range and press CTRL+A all the data is selected.
b. If you press CTRL+A a second time in the same range selects the entire spreadsheet.
c. If you are in a table then pressing the CTRL+A key selects the data excluding the total row
AND titles.
d. If you press the CTRL+A key a second time it selects the data, titles, and total row
e. It does not make any difference whether the spreadsheet contains data or not, if you are
outside the data area, in a blank area with no directly adjacent cells containing data,
CTRL+A selects the entire sheet.
f. If you have one or more objects e.g. Charts, selected then pressing CTRL+A selects them all.