Translations:Expression Manager/53/en
From LimeSurvey Manual
LimeSurvey uses the new Expression Manager (EM) module which will let LimeSurvey support more complex branching, assessments, validation, and tailoring. It will replace how LimeSurvey manages Replacements, Conditions, and Assessments on the back-end. It will also speed up processing considerably since it eliminates most run-time database reads. EM was developed by Dr. Thomas White (TMSWhite).