و آر ایل:https://d20ohkaloyme4g.cloudfront.net/img/document_thumbnails/e88bc0781f6393f038cf9e72d7c5e169/thumb_1200_848.png
و آر ایل:https://www.studocu.com/ko/document/kongju-national-university/computer-programming-for-earth-sciences/한글실습예제/90625691
