Click anywhere in the table to show a lettered bar over the columns and a numbered bar to the left of the rows.
Select a single row or column: Click the bar for the row or column you want to select.
Select multiple rows or columns: Click the bar for a row or column, then drag a selection handle (a white square) to encompass the rows or columns you want.
Select discontiguous rows or columns: Command-click the bars for the rows and columns you want to select.