Translations:ExpressionScript - Presentation/64/en
From LimeSurvey Manual
In addition, ExpressionScript lets you refer to variables by the Question Code (the 'title' column in the questions table within the database). This is also the variable label used when you export your data to SPSS, R, or SAS. For example, if you have questions about name, age, and gender, you could call those variables name, age, and gender instead of 12345X13X22, 12345X13X23, and 12345X13X24. This makes equations easier for everyone to read and validate the logic, plus making it possible to shuffle questions around without having to keep track of group or question numbers.