What does ORD mean in GAMS?

What does ORD mean in GAMS? Ord refers to the relative position of each element in the set not necessarily the order in which they are typed. In particular the order may be different as determined by the rules for set ordering.

Ord refers to the relative position of each element in the set not necessarily the order in which they are typed. In particular the order may be different as determined by the rules for set ordering.