While learning sas tutorial from PSU. @ https://online.stat.psu.edu/stat480/lesson/welcome-stat-480 . I Came across these sentences: Note that, in general, using ELSE statements with IF-THEN statements can save resources: Using IF-THEN statements without the ELSE statement causes SAS to evaluate all IF-THEN statements. Using IF-THEN statements with the ELSE statement causes SAS to execute IF-THEN statements until it encounters the first true statement. Subsequent IF-THEN statements are not evaluated. can someone explain me the above lesson with an example. Thanks. ... View more