TRichView.com

I don't know. RichViewEdit don't have properties like PageHeight.
Try ask Sergey (author)

It's my TForm which contains TRichViewEdit.
Add protect/public(as you wish) procedure SetPageProps and call after load RTF.

Hello Tomas!

Try
change sources
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RVRTFProps.pas

procedure TRVRTFReaderProperties.ReaderEndParsing(Sender: TObject);
begin
{$IFDEF RICHVIEW_DPMARGINS}
if not EditFlag then begin
if Reader.RTFState.DocProps.LeftMarginTw ...