Array access
| beginarrinit | 
     Begin an array initialization.
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| chkarrind | 
     Check whether an index tuple of an array is valid.
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| cmpindices | 
     Compare two index tuples.
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| endarrinit | 
     Terminate an array initialization.
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| getarrdim | 
     Get the number of dimensions of an array.
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| getarrsets | 
     Get the index sets of an array.
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| getarrsize | 
     Get the size of an array.
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| getarrtype | 
     Get the type of an array.
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| getarrval | 
     Get the value of an array entry.
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| getfirstarrentry | 
     Get the list of indices of the first entry of an array.
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| getfirstarrtruentry | 
     Get the list of indices of the first true entry of an array.
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| getlastarrentry | 
     Get the list of indices of the last entry of an array.
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| getnextarrentry | 
     Get the list of indices of the next entry of an array.
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| getnextarrtruentry | 
     Get the list of indices of the next true entry of an array.
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| setarrval | 
     Set the value of an array entry.
     | 
 
