I am but an egg, but . . . - Knowledge of vi keystrokes allows integration of automated text editing with other shell commands, as those keystrokes are script

I am but an egg, but . . . - Knowledge of vi keystrokes allows integration of automated text editing with other shell commands, as those keystrokes are scriptable. - Search and replace commands allows fine-grained specification of global texts. Tricks like "delete all lines from the start of this code block to the end" are no big deal. - vi easily incorporates the output of shell commands into the text you're editing.