R.D. Sivakumar is an Assistant Professor of Computer Science and Head of the Department of M.Com.(CA) at Ayya Nadar Janaki Ammal College in Sivakasi, India. He provides his contact information including mobile number, email address, and website. The document then explains that clicking inside a table brings up a floating toolbar at the top of the screen with icons that can be used to perform various table-related functions.