Flags specifying various characteristics of the annotation.
public enum Flag
If e_hidden is set, do not display or print the annotation or allow it to interact with the user, regardless of its annotation type or whether an annotation handler is available.
If e_invisible is set, do not display the annotation if it does not belong to one of the standard annotation types and no annotation handler is available. If clear, display such an unknown annotation using an appearance stream specified by its appearance dictionary, if any.
If e_locked is set, do not allow the annotation to be deleted or its properties (including position and size) to be modified by the user. However, this flag does not restrict changes to the annotation's contents, such as the value of a form field.
If e_locked_contents is set, do not allow the contents of the annotation to be modified by the user. This flag does not restrict deletion of the annotation or changes to other annotation properties, such as position and size.
If e_no_rotate is set, do not rotate the annotation's appearance to match the rotation of the page.
If e_no_view is set, do not display the annotation on the screen or allow it to interact with the user. The annotation may be printed (depending on the setting of the Print flag) but should be considered hidden for purposes of on-screen display and user interaction.
If e_no_zoom is set, do not scale the annotation's appearance to match the magnification of the page.
If e_print is set, print the annotation when the page is printed. If clear, never print the annotation, regardless of whether it is displayed on the screen. This can be useful, for example, for annotations representing interactive pushbuttons, which would serve no meaningful purpose on the printed page.
If e_read_only is set, do not allow the annotation to interact with the user. The annotation may be displayed or printed (depending on the settings of the NoView and Print flags) but should not respond to mouse clicks or change its appearance in response to mouse motions.
If e_toggle_no_view is set, invert the interpretation of the NoView flag for certain events. A typical use is to have an annotation that appears only when a mouse cursor is held over it.