ABSTRACT
In the following interactive session, the numeric variables value1 and value2 are initialized to 10 and 15, respectively. The echo command is used to show that the assignments work properly.
In the following session, the @ command declares two variables, difference and sum, and initializes them to the values of the expressions to the right of the respective = signs. These actions result in the variables difference and sum taking the values −5 and 25, respectively.
