FlattenTransparencyOperation Log Property. Returns information from the last FlattenTransparency operation. ABCpdf .NET PDF Library. From ABCpdf .net previous page next page Log Property Type Default Value Read Only Description [C#] string [Visual Basic] String None Yes Returns information from the last FlattenTransparency operation. Notes If for some reason an object was not able to be flattened, a reason will be indicated here. Example See the Flatten method. previous page start next page