Hi S_Line,
Greetings from Syncfusion support.
The paper size requirement not applicable for RichTextEditor and we have defined scope to Rich Text Editor for HTML editing alone for lightweight purpose and Document Editor comes to cover the Word specific features. We couldn’t integrate all word specific features within the Rich Text Editor. So, if you prefer word specific features, kindly proceed with our EJ2 Document Editor component.
Regards,
Sureshkumar P