SE_INDEX(num)SE_STR(sestring)
Accesses a member using an sestring internalized string that was received from the ScriptEase API. You can generate such strings using the seInternalizeString or seInternalizeStringHidden API call. Member names passed to callback functions are in this format.
An sestring is faster to use than a string literal member name. When you pass a member name using SE_MEM, it has to be converted into an sestring internally before continuing. Doing it once and referring to members using the resulting sestring is faster. In addition, you can compare sestrings for equality using the == operator which is much faster than the strcmp_sechar needed to compare text strings.