Method of ITextDocument
Start undo group or merge with previous
TextDocument.BeginUndoGroup(bMerge, nActionType);
==== Visual Basic Script ====
TextDocument.BeginUndoGroup bMerge, nActionType
==== C++ ====
HRESULT hr = TextDocument.BeginUndoGroup(bMerge, nActionType);
===== See Also ===== ITextDocument