Practice hands on session for Chapter 4 Vi Editor and answer the following questions. Type your answers in a word document and submit to Moodle. What are The different modes of the vi editor What is Memory buffers What is The process of opening a file for editing How do you go to input mode and get back to edit mode How do you delete a character and How do you delete a line How do you undo what you have done How do you Save a file How do you write and continue your session without Quitting vi Provide example for pattern search / and ? Provide example for Text Replacement: Using r, R, and U