An optional content membership dictionary: content whose visibility depends on several groups through a policy or a visibility expression. A live view over its dictionary.
public sealed class PdfOptionalContentMembership
ISO 32000-2 §8.11.2.2 (PDF 1.5), Table 97. A visibility expression (VE, PDF 1.6) takes precedence over OCGs and
P; an invalid expression falls back to them. Without usable groups the membership has no effect: content is visible.
kind:method, kind:property, kind:ctor. Press Esc to clear.DictionaryGets the membership dictionary.GroupsGets the groups whose states the policy combines (OCGs, a dictionary or an array); null and deleted entries are ignored.ReferenceGets the indirect reference to the dictionary, or null.VisibilityExpressionGets the parsed visibility expression (VE), or null when absent or invalid.