errata: two more

errata.html

@@ -17,6 +17,12 @@ pre {
 </head>
 <body>
   <h1>Errata</h1>
+  <p>
+    <b>p.xiii, ¶1: For "Object Oberon provided the syntax for method
+    declarations", read "Oberon-2 provided the syntax for method declarations".
+    (Thanks to Luca Boasso, 2015-02-15.)
+  </p>
+
   <p>
     <b>p.9, ¶2</b>: For "can compared", read "can be compared".
     (Thanks to Antonio Macías Ojeda, 2015-10-22.
@@ -78,6 +84,13 @@ pre {
     (Thanks to Yoshiki Shibata, 2015-12-20.)
   </p>
 
+  <p>
+    <b>p.57, ¶4: To "any comparison with NaN always yields false",
+    add "(except <code>!=</code>, which is always the negation of
+    <code>==</code>)".
+    (Thanks to Luca Boasso, 2016-02-15.)
+  </p>
+
   <p>
     <b>p.68</b>: The table of UTF-8 encodings is missing a bit from each first byte.
     The corrected table is shown below.