Sample Evaluate syntax to give ‘or’ condition is given . This is one of the most frequently used coding styles
Evaluate Marital-code When 'M' ADD 2 to People-count When 'S' When 'D' When 'W' ADD 1 to People-Count End-Evaluate.
The way above code tells, WHEN in sequence you have 3 WHEN. That means, if you get in input either of the values, adding ‘1’ to people count.