You can embed functions as arguments within a function.

Example:

In this example, the function Average is embedded in the function Sum:

sum(row[3:5], avg(row[4:6], 40, 50), row[7; 9], 70, 80)

• Row segments 3, 4 and 5

• The average of row segments 4, 5 and 6, with the numbers 40 and 50

• Row segments 7 and 9

• The numbers 70 and 80