When you paste or import data into the Excel spreadsheet, you might notice unusual symbols like a diamond with a question mark. The replacement character � (often a black diamond with a white question mark or an empty square box) represents an unknown, unrecognized or unrepresentable character:

Because of different standards of different countries and cultures, there is a lot of situations when you need to change commas to dots, decimal points or dots, decimal points to commas in an Excel spreadsheet:

If you need to select all objects embedded into the worksheet, e.g., select all charts to adjust their size, press Ctrl+G and click the Special button or use Ctrl to select objects individually.

To move around the worksheet with your keyboard, use the key combinations: