See how to put a check mark in a cell when a number is greater than zero using the IF Function and the CHAR function:
(00:41) Insert a Symbol
(01:28) Generate full list of all 255 ASCII Characters using two tricks: 1) Right-click Trick to fill column with Series of numbers 1 to 255. See the CHAR Function to get the ASCII Character for a give ASCCI Code.
(03:48) See the CODE Function to get the ASCII Code for a give ASCCI Character.
(04:16) IF Function to put check mark in cell when number is greater than zero.