Use descriptive names for all EXPORTed and SHARED Definitions. This will make your code more readable. The naming convention adopted throughout the ECL documentation and training courses is as follows:

Definition Type     Are Named
Boolean              Is...
Set Definition       Set...
Record Set           ...DatasetName

For example:

IsTrue := TRUE;                         // a BOOLEAN Definition
SetNumbers := [1,2,3,4,5];              // a Set Definition
R_People := People(firstname[1] = 'R'); // a Record Set Definition