{name: "StructSelect", argLength: 1, aux: "Int64"}, // arg0=struct, auxint=field index.  Returns the auxint'th field.

	// Arrays
	{name: "ArrayMake0"},                              // Returns array with 0 elements
	{name: "ArrayMake1", argLength: 1},                // Returns array with 1 element
	{name: "ArraySelect", argLength: 1, aux: "Int64"}, // arg0=array, auxint=index. Returns a[i].