ed
explanatory only.</p>

<h2>Lesson #0 - Read the User's Reference Manual</h2>

<p>Since the program is a command-driven program, you must eventually
become familiar with the commands. Reading the User's Reference Manual
once from cover to cover isn't the only way to get started but all
other methods work less well. Just as you need to learn the words of
the language you speak, you need to learn the command language in
order to speak to the program.</p>

<h2>Lesson #1 - Entering a known lens prescription (