diff --git a/advanced-iterators.html b/advanced-iterators.html
old mode 100644
new mode 100755
index fce7dc8..6727d13
--- a/advanced-iterators.html
+++ b/advanced-iterators.html
@@ -24,7 +24,7 @@ body{counter-reset:h1 7}
 
 <p>Let me spell it out for you.
 
-<pre><code>HAWAII + IDAHO + IOWA + OHIO == STATES
+<pre class=nd><code>HAWAII + IDAHO + IOWA + OHIO == STATES
 510199 + 98153 + 9301 + 3593 == 621246
 
 H = 5
@@ -72,8 +72,10 @@ if __name__ == '__main__':
         if solution:
             print(solution)</code></pre>
 
-<pre class=screen>
-<samp class=p>you@localhost:~$ </samp><kbd>python3 alphametics.py "HAWAII + IDAHO + IOWA + OHIO = STATES"</kbd>
+<p>You can run the program from the command line. On Linux, it would look like this. (These may take some time, depending on the speed of your computer, and there is no progress bar. Just be patient!)
+
+<pre class='nd screen'>
+<samp class=p>you@localhost:~$ </samp><kbd>python3 alphametics.py "HAWAII + IDAHO + IOWA + OHIO == STATES"</kbd>
 <samp>HAWAII + IDAHO + IOWA + OHIO = STATES
 510199 + 98153 + 9301 + 3593 == 621246</samp>
 <samp class=p>you@localhost:~$ </samp><kbd>python3 alphametics.py "I + LOVE + YOU == DORA"</kbd>