LibreOffice 5 vs Rich Text Format

In LibreOffice writer 5 I would like to the file extension .RTF (Rich Text Format) output also associate can take place as rtf document. However, I can’t find. Who can assist me? In advance many thanks With best regards, Bé Langenburg

In LibreOffice writer 5 wil ik graag de bestandsextensie .rtf (Rich Text Format) koppelen zodat er ook uitvoer kan plaats vinden als rtf document. Ik kan echter niet vinden. Wie kan mij daarbij helpen?
Bij voorbaat mijn hartelijke dank, Bé Langenburg, Emmen the Netherlands

Sorry it’s not there for select in the file type box in the Save screen?

Lang, I need to warn you as a precaution: -always- save as OpenDocument Format before you save as any other format so you’d not lose anything which is unavoidable for the time being.