The ElementOperandprovides the linking to sub-elements within a ContentFilter. The link is in the form of an integer that is used to index into the array of elements contained in the ContentFilter. An index is considered valid if its value is greater than the element index it is part of and it does not Referencea non-existent element. Clientsshall construct filters in this way to avoid circular and invalid References. Serversshould protect against invalid indexes by verifying the index prior to using it.

Table 127defines the ElementOperandtype.

Table 127– ElementOperand

Name

Type

Description

ElementOperand

structure

ElementOperand value.

index

UInt32

Index into the element array.