This document describes using nested if statements to evaluate multiple conditions and execute different statements based on the input values. The nested if statements check condition1 and condition2 in sequence, and different statements will run depending on whether condition1 and condition2 are true or false. Statement 1 will run if condition1 is true, statement 2 will run if condition1 is false and condition2 is true, and statement 5 will run if both conditions are false.