In the Ruletest feature that lets you set expected values for tests, sometimes leading or trailing blanks on String values (called whitespace) cause imprecise matching to the output from rules. While the default behavior of trimming the whitespace is typically preferred, a new property, when set to false, allows you to tell Corticon Studio to not perform trimming, and thus reduce these validation mismatches.
The default behavior is apparent when copying the output to the Expected column, as that action strips whitespaces, and often reveals apparent mismatches immediately. The default value is true.