Count and structure numbers up to 100 in the field of 100. Hide or display numbers and this way place numbers and base numbers.
Press the cursor button in the toolbar to control the tool. Show and hide numbers by selecting or deselecting the boxes.
Click on the settings button to adjust the colours of the boxes. Click on the settings button again or next to the settings menu to close the menu.
To hide all the numbers, press the refresh button. To uncover all numbers at once, press the "Show all numbers" button.