| Class | Description |
 | AnnAudioObject | Defines an audio object. |
 | AnnBrush | Defines abstract objects used to fill an annotation object. Classes that derive from AnnBrush describe how the area is filled |
 | AnnCodecs | Provides support for loading and saving objects to annotation files. |
 | AnnCodecsInfo | Represents Annotation file information. |
 | AnnContainer | Represents an annotation container. |
 | AnnContainerCollection | Represents a dynamic collection of AnnContainer's and provides notifications when items are added or removed. |
 | AnnContainerMapper | Provides methods for converting values between display, annotations and image coordinates. |
 | AnnCrossProductObject | Defines an annotation cross-product object. |
 | AnnCurveObject | Defines an annotation curve object. |
 | AnnDataProvider | Provider for annotations image data. |
 | AnnDeserializeOptions | Options to use when loading annotation objects. |
 | AnnDrawDesignerEventArgs | Provides data for the AnnAutomation.Draw event. |
 | AnnEditContentEventArgs | Provides data for the AnnAutomation.EditContent event. |
 | AnnEditDesignerEventArgs | Provides data for the AnnAutomation.Edit event. |
 | AnnEditTextEventArgs | Provides data for the AnnAutomation.EditText event. |
 | AnnEllipseObject | Defines an annotation ellipse object. |
 | AnnEncryptObject | Defines an annotation encrypt object. |
 | AnnFont | Defines a particular format for text, including font face, size, and style attributes using to draw annotation strings. |
 | AnnFreehandHotspotObject | Defines an annotation freehand hot spot object. |
 | AnnGradientBrush | Describes a brush with a gradient, composed of gradient stops. |
 | AnnGradientStop | Describes the location and color of a transition point in a gradient. |
 | AnnGradientStopCollection | Represents a dynamic collection of AnnGradientStop's and provides notifications when items are added or removed. |
 | AnnGroupObject | Provides support for creating and managing annotation group objects. |
 | AnnGroupsRoles | Provides support for user roles in the annotations framework. |
 | AnnHiliteObject | Defines an annotation hilite object. |
 | AnnHotspotObject | Defines an annotation hot spot object. |
 | AnnImageObject | Defines an annotation image object. |
 | AnnLabel | The AnnLabel class is used to display the text elements of various LEADTOOLS annotation objects. |
 | AnnLayer | Defines an annotation layer for logically grouping common annotations objects. |
 | AnnLayerCollection | Represents a dynamic collection of AnnLayers and provides notifications when items are added or removed. |
 | AnnLinearGradientBrush | Describes a brush with a linear gradient. |
 | AnnLoadPictureEventArgs | Event data for the AnnRenderingEngine.LoadPicture event. |
 | AnnLockObjectEventArgs | Provides data for the AnnAutomation.LockObject event. |
 | AnnMedia | Defines a media (audio or video) source. |
 | AnnMediaObject | Defines a media (Audio or Video) object. |
 | AnnNoteObject | Defines an annotation note object. |
 | AnnNotifyCollectionChangedEventArgs | Provides data for the AnnObjectCollection.CollectionChanged event. |
 | AnnObject | Defines the base class for all annotation objects. |
 | AnnObjectCollection | Represents a dynamic collection of AnnObjects and provides notifications when items are added or removed. |
 | AnnObjectCollectionEventArgs | Provides data for the AnnContainer.ObjectAdded and AnnContainer.ObjectRemoved events. |
 | AnnOperationInfoEventArgs | Defines an annotation operation information including its type and the annotation object involved. |
 | AnnPicture | Defines an annotation picture. |
 | AnnPointerEventArgs | Provides data for the IAnnAutomationControl.AutomationDoubleClick, IAnnAutomationControl.AutomationPointerDown, IAnnAutomationControl.AutomationPointerMove, and IAnnAutomationControl.AutomationPointerUp, events. |
 | AnnPointerObject | Defines an annotation pointer object. |
 | AnnPointObject | Defines an annotation point object. |
 | AnnPolylineObject | Defines an annotation polyline object. |
 | AnnPolyRulerObject | Defines an annotation polyruler object. |
 | AnnPropertyChangedEventArgs | Provides data for the AnnObject.PropertyChanged event. |
 | AnnProtractorObject | Defines an annotation protractor object. |
 | AnnRectangleObject | Defines an annotation rectangle object. |
 | AnnRedactionObject | Defines an annotation redaction object. |
 | AnnRenderingEngine | The abstract AnnRenderingEngine class defines a rendering engine for annotation objects. |
 | AnnResources | Contains default resources for various annotation objects. |
 | AnnReview | Represents an annotation review comment item. |
 | AnnRoles | List of roles used by the application. |
 | AnnRubberStampObject | Defines an annotation stamp object. |
 | AnnRunDesignerEventArgs | Provides data for the AnnAutomation.Run event. |
 | AnnSelectionObject | Defines an annotation select object. |
 | AnnSerializeObjectEventArgs | Represents the load and save options event data for annotation codecs . |
 | AnnSerializeOptions | Options to use when saving annotation objects. |
 | AnnSnapToGridOptions | Options for annotation snap to grid behavior in annotation automation design mode. |
 | AnnSolidColorBrush | Fills an annotation object with a solid color. |
 | AnnStampObject | Defines an annotation stamp object. |
 | AnnStickyNoteObject | Defines an annotation sticky note object. |
 | AnnStroke | Defines objects used to draw lines and curves for annotation objects. |
 | AnnTextHiliteObject | Defines an annotation hilite text review object. |
 | AnnTextObject | Provides support for creating and managing text annotation objects. |
 | AnnTextPointerObject | Defines an annotation stamp object text pointer object. |
 | AnnTextRedactionObject | Defines an annotation redaction text review object. |
 | AnnTextReviewObject | Base class for annotation text review objects |
 | AnnTextRollupObject | Defines an annotation text rollup object. |
 | AnnTextStrikeoutObject | Defines an annotation strikeout text review object. |
 | AnnTextUnderlineObject | Defines an annotation underline text review object. |
 | AnnThickness | Represents the thickness of various properties in the annotation framework. |
 | AnnToolTipEventArgs | Provides data for the AnnAutomation.ToolTip event. |
 | AnnTransformer | Provides functionality for scaling, translating, and rotating annotation points and rectangles. |
 | AnnUnitConverter | Defines a helper class for unit conversions and abbreviations. |
 | LeadPointCollection | Represents an ordered collection of LeadPointD. |