#printSo far you have learned how tocopy and print existing files, and nowyou probably want to know how to add new textto a file.  The "a" (append) command letsyou do that.  For example, the sequence  ex file  a  A man, a plan, a canal - Panama.  .  wqwill append the line  A man, a plan, a canal - Panama.to the editor buffer, and write it on file "file".(If "file" didn't exist already, the editor willwarn you.  It's not an error, just a warning.)Try that.  Then say "cat file" to check what was written,and then type "ready".#create RefA man, a plan, a canal - Panama.#user#cmp file Ref#log#next15.2b 515.3b 2