Specifies how outline regions are added to an existing outline session object (IVsOutliningSession).
This enumeration has a FlagsAttribute attribute that allows a bitwise combination of its member values.Namespace: Microsoft.VisualStudio.TextManager.Interop
Assembly: Microsoft.VisualStudio.TextManager.Interop (in Microsoft.VisualStudio.TextManager.Interop.dll)
|Removes any existing outlining regions.|
|Indicates that the action is not part of the undo/redo stack. For example, this case applies if outlining is done when the document is first loaded.|
|Preserves existing outlining regions. New outlining regions are added to those already existing.|