Index: xml-src/FormEmitter.xml
===================================================================
--- xml-src/FormEmitter.xml	(revision 321)
+++ xml-src/FormEmitter.xml	(working copy)
@@ -41,6 +41,16 @@
 						?></select
 					></td
 				></tr
+				><tr title="Additional checks beyond what the spec requires."
+					><th
+						><label for="profile">Profile</label
+					></th
+					><td
+						><select id='profile' name='profile'
+							><?SaxCompiler-code t.emitProfileOptions(); 
+						?></select
+					></td
+				></tr
 				><?SaxCompiler-code t.maybeEmitNsfilterField(); ?><tr title="Disrespect MIME RFCs."
 					><th></th
 					><td
@@ -72,4 +82,4 @@
 		></table
 	></fieldset
 ></form
->
\ No newline at end of file
+>
Index: src/nu/validator/servlet/VerifierServletTransaction.java
===================================================================
--- src/nu/validator/servlet/VerifierServletTransaction.java	(revision 321)
+++ src/nu/validator/servlet/VerifierServletTransaction.java	(working copy)
@@ -28,6 +28,7 @@
 import java.io.InputStreamReader;
 import java.io.OutputStream;
 import java.util.Arrays;
+import java.util.HashMap;
 import java.util.HashSet;
 import java.util.LinkedHashSet;
 import java.util.LinkedList;
@@ -808,6 +809,7 @@
             setAllowRnc(false);
 
             loadDocAndSetupParser();
+            setErrorProfile();
 
             reader.setErrorHandler(errorHandler);
             contentType = documentInput.getType();
@@ -923,6 +925,23 @@
         validator = validatorByUrls(schemaUrls);
     }
 
+    protected void setErrorProfile() {
+        String profile = request.getParameter("profile");
+
+        HashMap<String, String> profileMap = new HashMap<String, String>();
+
+        if ("pedagogical".equals(profile)) {
+            profileMap.put("xhtml1", "warn");
+        } else if ("polyglot".equals(profile)) {
+            profileMap.put("xhtml1", "warn");
+            profileMap.put("xhtml2", "warn");
+        } else {
+            return; // presumed to be permissive
+        }
+
+        htmlParser.setErrorProfile(profileMap);
+    }
+
     /**
      * @throws SAXException
      * @throws IOException
@@ -1365,6 +1384,19 @@
      * @throws SAXException
      * 
      */
+    void emitProfileOptions() throws SAXException {
+        emitter.option("Permissive: only what the spec requires", "permissive",
+                true);
+        emitter.option("Pedagogical: suitable for teaching purposes",
+                "pedagogical", false);
+        emitter.option("Polyglot: works both as HTML and as XML",
+                "polyglot", false);
+    }
+
+    /**
+     * @throws SAXException
+     * 
+     */
     void emitLaxTypeField() throws SAXException {
         emitter.checkbox("laxtype", "yes", laxType);
     }
@@ -1691,4 +1723,4 @@
         CharsetEmitter.emit(contentHandler, this);
     }
 
-}
\ No newline at end of file
+}
Index: src/nu/validator/servlet/FormEmitter.java
===================================================================
--- src/nu/validator/servlet/FormEmitter.java	(revision 321)
+++ src/nu/validator/servlet/FormEmitter.java	(working copy)
@@ -97,6 +97,28 @@
 contentHandler.endElement("http://www.w3.org/1999/xhtml", "select", "select");
 contentHandler.endElement("http://www.w3.org/1999/xhtml", "td", "td");
 contentHandler.endElement("http://www.w3.org/1999/xhtml", "tr", "tr");
+__attrs__.clear();
+__attrs__.addAttribute("", "title", "title", "CDATA", "Additional checks beyond what the spec requires.");
+contentHandler.startElement("http://www.w3.org/1999/xhtml", "tr", "tr", __attrs__);
+__attrs__.clear();
+contentHandler.startElement("http://www.w3.org/1999/xhtml", "th", "th", __attrs__);
+__attrs__.clear();
+__attrs__.addAttribute("", "for", "for", "CDATA", "profile");
+contentHandler.startElement("http://www.w3.org/1999/xhtml", "label", "label", __attrs__);
+contentHandler.characters(__chars__, 46, 7);
+contentHandler.endElement("http://www.w3.org/1999/xhtml", "label", "label");
+contentHandler.endElement("http://www.w3.org/1999/xhtml", "th", "th");
+__attrs__.clear();
+contentHandler.startElement("http://www.w3.org/1999/xhtml", "td", "td", __attrs__);
+__attrs__.clear();
+__attrs__.addAttribute("", "id", "id", "CDATA", "profile");
+__attrs__.addAttribute("", "name", "name", "CDATA", "profile");
+contentHandler.startElement("http://www.w3.org/1999/xhtml", "select", "select", __attrs__);
+t.emitProfileOptions(); 
+						
+contentHandler.endElement("http://www.w3.org/1999/xhtml", "select", "select");
+contentHandler.endElement("http://www.w3.org/1999/xhtml", "td", "td");
+contentHandler.endElement("http://www.w3.org/1999/xhtml", "tr", "tr");
 t.maybeEmitNsfilterField(); 
 __attrs__.clear();
 __attrs__.addAttribute("", "title", "title", "CDATA", "Disrespect MIME RFCs.");
@@ -111,7 +133,7 @@
 contentHandler.startElement("http://www.w3.org/1999/xhtml", "label", "label", __attrs__);
 t.emitLaxTypeField(); 
 						
-contentHandler.characters(__chars__, 46, 31);
+contentHandler.characters(__chars__, 53, 31);
 contentHandler.endElement("http://www.w3.org/1999/xhtml", "label", "label");
 contentHandler.endElement("http://www.w3.org/1999/xhtml", "td", "td");
 contentHandler.endElement("http://www.w3.org/1999/xhtml", "tr", "tr");
@@ -128,7 +150,7 @@
 contentHandler.startElement("http://www.w3.org/1999/xhtml", "label", "label", __attrs__);
 t.emitShowImageReportField(); 
 						
-contentHandler.characters(__chars__, 77, 18);
+contentHandler.characters(__chars__, 84, 18);
 contentHandler.endElement("http://www.w3.org/1999/xhtml", "label", "label");
 contentHandler.endElement("http://www.w3.org/1999/xhtml", "td", "td");
 contentHandler.endElement("http://www.w3.org/1999/xhtml", "tr", "tr");
@@ -145,7 +167,7 @@
 contentHandler.startElement("http://www.w3.org/1999/xhtml", "label", "label", __attrs__);
 t.emitShowSourceField(); 
 						
-contentHandler.characters(__chars__, 95, 12);
+contentHandler.characters(__chars__, 102, 12);
 contentHandler.endElement("http://www.w3.org/1999/xhtml", "label", "label");
 contentHandler.endElement("http://www.w3.org/1999/xhtml", "td", "td");
 contentHandler.endElement("http://www.w3.org/1999/xhtml", "tr", "tr");
@@ -169,5 +191,5 @@
 contentHandler.endElement("http://www.w3.org/1999/xhtml", "fieldset", "fieldset");
 contentHandler.endPrefixMapping("");
 }
-private static final char[] __chars__ = { 'V', 'a', 'l', 'i', 'd', 'a', 't', 'o', 'r', ' ', 'I', 'n', 'p', 'u', 't', 'D', 'o', 'c', 'u', 'm', 'e', 'n', 't', 'S', 'c', 'h', 'e', 'm', 'a', 's', 'P', 'r', 'e', 's', 'e', 't', 'N', 'o', 'n', 'e', 'P', 'a', 'r', 's', 'e', 'r', ' ', 'B', 'e', ' ', 'l', 'a', 'x', ' ', 'a', 'b', 'o', 'u', 't', ' ', 'H', 'T', 'T', 'P', ' ', 'C', 'o', 'n', 't', 'e', 'n', 't', '-', 'T', 'y', 'p', 'e', ' ', 'S', 'h', 'o', 'w', ' ', 'I', 'm', 'a', 'g', 'e', ' ', 'R', 'e', 'p', 'o', 'r', 't', ' ', 'S', 'h', 'o', 'w', ' ', 'S', 'o', 'u', 'r', 'c', 'e' };
+private static final char[] __chars__ = { 'V', 'a', 'l', 'i', 'd', 'a', 't', 'o', 'r', ' ', 'I', 'n', 'p', 'u', 't', 'D', 'o', 'c', 'u', 'm', 'e', 'n', 't', 'S', 'c', 'h', 'e', 'm', 'a', 's', 'P', 'r', 'e', 's', 'e', 't', 'N', 'o', 'n', 'e', 'P', 'a', 'r', 's', 'e', 'r', 'P', 'r', 'o', 'f', 'i', 'l', 'e', ' ', 'B', 'e', ' ', 'l', 'a', 'x', ' ', 'a', 'b', 'o', 'u', 't', ' ', 'H', 'T', 'T', 'P', ' ', 'C', 'o', 'n', 't', 'e', 'n', 't', '-', 'T', 'y', 'p', 'e', ' ', 'S', 'h', 'o', 'w', ' ', 'I', 'm', 'a', 'g', 'e', ' ', 'R', 'e', 'p', 'o', 'r', 't', ' ', 'S', 'h', 'o', 'w', ' ', 'S', 'o', 'u', 'r', 'c', 'e' };
 }