Set access
| addelset | 
     Add an element to set.
     | 
| fnlset | 
     Finalize a set.
     | 
| getelsetndx | 
     Get the index of a set element.
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| getelsetval | 
     Get the value of an element of a set.
     | 
| getfirstsetndx | 
     Get the index of the first element in a given set.
     | 
| getlastsetndx | 
     Get the index of the last element in a set.
     | 
| getsetsize | 
     Get the size of a set.
     | 
| getsettype | 
     Get the type of a set.
     | 
| isinset | 
     Check if an element is contained in a set.
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| mapset | 
     Modify the structure of a set for fast element retrieval.
     | 
| resetset | 
     Remove all elements of a set.
     | 
| unmapset | 
     Restore a mapped set to its initial state.
     | 
 
