Update non-code to blockquote in 1990

1990/jaw/README.md

@@ -74,13 +74,11 @@ directory it is run from.
 
 #### Minimal, Universal File Bundling (or, Functional Obfuscation in a Self-Decoding Unix Shell Archive)
 
-```
-    "Use an algorithm, go to jail."
+> "Use an algorithm, go to jail."
+>
+>    -- anon., circa 1988
 
-    -- anon., circa 1988
-```
-
-**HISTORICAL NOTE**: This entry was submitted just before the
+**HISTORICAL NOTE**: We started working on this just before the
 [Morris worm](https://en.wikipedia.org/wiki/Morris_worm) era.
 
 Myriad formats have been proposed for network-mailable data. A major difficulty
@@ -113,14 +111,12 @@ within a modified Shannon model of communication, the 'shark' effort aims to
 construct a "shortest program" for source decoding in the Turing-universal Unix
 environment.
 
-```
-    Oh, the shark has pretty teeth, dear--
-    And he shows them pearly white
-    Just a jackknife has Macheath, dear--
-    And he keeps it out of sight.
-
-    -- Bertolt Brecht, Threepenny Opera
-```
+>    Oh, the shark has pretty teeth, dear--<br>
+>    And he shows them pearly white<br>
+>    Just a jackknife has Macheath, dear--<br>
+>    And he keeps it out of sight.<br>
+>
+>    -- Bertolt Brecht, Threepenny Opera
 
 
 ### Portability

1990/jaw/index.html

@@ -445,10 +445,11 @@ directory it is run from.</p>
 <h2 id="authors-remarks">Authors’ remarks:</h2>
 <h3 id="abstract">ABSTRACT</h3>
 <h4 id="minimal-universal-file-bundling-or-functional-obfuscation-in-a-self-decoding-unix-shell-archive">Minimal, Universal File Bundling (or, Functional Obfuscation in a Self-Decoding Unix Shell Archive)</h4>
-<pre><code>    &quot;Use an algorithm, go to jail.&quot;
-
-    -- anon., circa 1988</code></pre>
-<p><strong>HISTORICAL NOTE</strong>: This entry was submitted just before the
+<blockquote>
+<p>“Use an algorithm, go to jail.”</p>
+<p>– anon., circa 1988</p>
+</blockquote>
+<p><strong>HISTORICAL NOTE</strong>: We started working on this just before the
 <a href="https://en.wikipedia.org/wiki/Morris_worm">Morris worm</a> era.</p>
 <p>Myriad formats have been proposed for network-mailable data. A major difficulty
 undermining the popularity of most file/message bundlers is that the sender
@@ -476,12 +477,13 @@ encoding schemes.</p>
 within a modified Shannon model of communication, the ‘shark’ effort aims to
 construct a “shortest program” for source decoding in the Turing-universal Unix
 environment.</p>
-<pre><code>    Oh, the shark has pretty teeth, dear--
-    And he shows them pearly white
-    Just a jackknife has Macheath, dear--
-    And he keeps it out of sight.
-
-    -- Bertolt Brecht, Threepenny Opera</code></pre>
+<blockquote>
+<p>Oh, the shark has pretty teeth, dear–<br>
+And he shows them pearly white<br>
+Just a jackknife has Macheath, dear–<br>
+And he keeps it out of sight.<br></p>
+<p>– Bertolt Brecht, Threepenny Opera</p>
+</blockquote>
 <h3 id="portability">Portability</h3>
 <p>We have ported this program to a wide variety of systems. Among
 these are:</p>

1990/pjr/README.md

@@ -59,9 +59,7 @@ to functions!
 
 This program prints out the string:
 
-```
-    the quick brown fox jumped over the lazy dog
-```
+> the quick brown fox jumped over the lazy dog
 
 
 ## Author's remarks:

1990/pjr/index.html

@@ -427,7 +427,9 @@ it is done?</p>
 to functions!</p>
 <h3 id="spoiler">Spoiler:</h3>
 <p>This program prints out the string:</p>
-<pre><code>    the quick brown fox jumped over the lazy dog</code></pre>
+<blockquote>
+<p>the quick brown fox jumped over the lazy dog</p>
+</blockquote>
 <h2 id="authors-remarks">Author’s remarks:</h2>
 <p>It is simple to make the program print other strings. Each
 alphabetical character from a to z is printed out as its