Member name	Value	Description
CPDFAnnotationFlagInvisible	1	[IGNORED] If set, ignore annotation AP stream if there is no handler available.
CPDFAnnotationFlagHidden	2	If set, do not display or print the annotation or allow it to interact with the user.
CPDFAnnotationFlagPrint	4	[IGNORED] If set, print the annotation when the page is printed.
CPDFAnnotationFlagNoZoom	8	[IGNORED] If set, don't scale the annotation’s appearance to match the magnification of the page.
CPDFAnnotationFlagNoRotate	16	[IGNORED] If set, don't rotate the annotation’s appearance to match the rotation of the page.
CPDFAnnotationFlagNoView	32	[IGNORED] If set, don't display the annotation on the screen. (But printing might be allowed)
CPDFAnnotationFlagReadOnly	64	If set, don’t allow the annotation to be deleted or its properties to be modified, including `contents`. This is ignored for widget annotations (form elements). For widget annotations the `GetIsReadOnly` property of the associated form field should be used instead. This flag only restricts the ComPDFKit UI and does not impact programmatic modification of the annotation.
CPDFAnnotationFlagLocked	128	If set, don’t allow the annotation to be deleted or its properties to be modified, except for `contents`.
CPDFAnnotationFlagToggleNoView	256	[IGNORED] If set, invert the interpretation of the `.noView` flag for certain events.
CPDFAnnotationFlagLockedContents	512	[IGNORED] If set, don't allow the `contents` of the annotation to be modified by the user.