clarification

lint.html

@@ -498,7 +498,7 @@ <h2 id=options>Options</h2>
   <tr>
       <td>Tolerate ES5 syntax</td>
       <td><code>es5</code></td>
-      <td><code>true</code> if ES5 syntax should be allowed.</a></td>
+      <td><code>true</code> if ES5 syntax should be allowed.</a> If is likely that programs using this option will produce syntax errors on ES3 systems.</td>
   </tr>
   <tr>
     <td>Tolerate <code>eval</code> </td>
@@ -572,10 +572,10 @@ <h2 id=options>Options</h2>
       statement to declare global variables in a script file.</td>
   </tr>
   <tr>
-    <td>Disallow insecure <code>.</code> and <code>[^</code>...<code>]</code>. in /RegExp/ </td>
+    <td>Disallow  <code>.</code> and <code>[^</code>...<code>]</code>. in /RegExp/ </td>
     <td><code>regexp</code></td>
     <td><code>true</code> if <code>.</code> and <code>[^</code>...<code>]</code> should not be allowed in RegExp
-      literals. These forms should not be used when validating in secure applications.</td>
+      literals. They match more material than might be expected, allowing attackers to confuse applications. These forms should not be used when validating in secure applications. </td>
   </tr>
   <tr>
     <td>Assume Rhino </td>