Cross Sum/Digit Sum

• 01 Which functions are available in the Cross sums area?
• 02 How do I find the sum of the digits and its variants?
• 03 How do I find numbers of a range that have a certain sum of digits?
• 04 How do I find numbers of a range that have a certain iterated sum of digits?
• 05 How do I find the frequency of cross sums in a range?
• 06 How do I find the frequency of iterated cross sums in a range?