Another good description of vi usage can be found in the book, UNIX for VMS Users by Bourne. Pages back one screen. Pages down half screen. Pages up half screen. Moves cursor to beginning of current line.
Moves cursor forward one character.
Text Insertion Commands i Inserts text before cursor. Opens new line below the current line for text inser- tion. Text Deletion Commands dw Deletes current word. Deletes current character. P Puts back text from the previous delete.