Tidy javadoc
diff --git a/jena-arq/src/main/java/org/apache/jena/riot/RIOT.java b/jena-arq/src/main/java/org/apache/jena/riot/RIOT.java
index b116ec6..0f7dded 100644
--- a/jena-arq/src/main/java/org/apache/jena/riot/RIOT.java
+++ b/jena-arq/src/main/java/org/apache/jena/riot/RIOT.java
@@ -119,9 +119,11 @@
     private static String RDFXML_SYMBOL_BASE = "http://jena.apache.org/riot/rdfxml#";
 
     /**
-     * Access to the original legacy RDF/XML parser
-     * Use Lang constant {@link RRX#RDFXML_ARP0}
-     * @deprecated Do not use! This will be removed.
+     * Legacy access to the original legacy RDF/XML parser.
+     * The original ARP parser will be removed.
+     * Use {@link Lang} constant {@link RRX#RDFXML_ARP1} or {@link RRX#RDFXML_ARP0}
+     * to access ARP v1 (RIOT integration) or ARP v0 (the original ARP parser).
+     * @deprecated Do not use this symbol! This will be removed.
      */
     @Deprecated
     public static Symbol symRDFXML0 = SystemARQ.allocSymbol(RDFXML_SYMBOL_BASE, "rdfxml0");
diff --git a/jena-arq/src/main/java/org/apache/jena/sparql/sse/writers/SSEWriteLib.java b/jena-arq/src/main/java/org/apache/jena/sparql/sse/writers/SSEWriteLib.java
index 89087e9..96037c4 100644
--- a/jena-arq/src/main/java/org/apache/jena/sparql/sse/writers/SSEWriteLib.java
+++ b/jena-arq/src/main/java/org/apache/jena/sparql/sse/writers/SSEWriteLib.java
@@ -22,6 +22,7 @@
 import org.apache.jena.sparql.ARQInternalErrorException;
 import org.apache.jena.sparql.sse.Tags;
 
+/** Helper code for wring SSE. */
 public class SSEWriteLib
 {
     static final int UNDEF = 0;
@@ -33,51 +34,51 @@
 
     // -- Normal markers
 
-    /** Start a tagged item - all one line - usual bracketting */
+    /** Start a tagged item - all one line - usual bracketing */
     public static void startOneLine(IndentedWriter out, String tag) {
         _start(out, Tags.LPAREN);
         out.print(tag);
         out.print(" ");
     }
 
-    /** Finish a tagged item - all one line - usual bracketting */
+    /** Finish a tagged item - all one line - usual bracketing */
     public static void finishOneLine(IndentedWriter out, String tag) {
         _finish(out, Tags.RPAREN);
     }
 
-    /** Start a tagged item - usual bracketting */
+    /** Start a tagged item - usual bracketing */
     public static void start(IndentedWriter out, String tag, int linePolicy)
     { _start(out, tag, linePolicy, Tags.LPAREN); }
 
-    /** Finish a tagged item - usual bracketting */
+    /** Finish a tagged item - usual bracketing */
     public static void finish(IndentedWriter out, String tag)
     { _finish(out, tag, Tags.RPAREN); }
 
-    /** Start an item - no tag - usual bracketting */
+    /** Start an item - no tag - usual bracketing */
     public static void start(IndentedWriter out)
     { _start(out, Tags.LPAREN); }
 
-    /** Finish an item - no tag - usual bracketting */
+    /** Finish an item - no tag - usual bracketing */
     public static void finish(IndentedWriter out)
     {  _finish(out, Tags.RPAREN);  }
 
     // -- With the other markers (conventionally, short things)
 
-    /** Start an item - alternative bracketting */
+    /** Start an item - alternative bracketing */
     public static void start2(IndentedWriter out, String tag, int linePolicy)
     { _start(out, tag, linePolicy, Tags.LBRACKET); }
 
-    /** Finish an item - alternative bracketting */
+    /** Finish an item - alternative bracketing */
     public static void finish2(IndentedWriter out, String tag)
     { _finish(out, tag, Tags.RBRACKET);  }
 
-    /** Start an item - no tag - alternative bracketting */
+    /** Start an item - no tag - alternative bracketing */
     public static void start2(IndentedWriter out)
     { _start(out, Tags.LBRACKET); }
 
-    /** Finish an item - no tag - alternative bracketting */
+    /** Finish an item - no tag - alternative bracketing */
     public static void finish2(IndentedWriter out)
-    { _finish(out, Tags.RBRACKET);  }
+    { _finish(out, Tags.RBRACKET); }
 
     // ---- Workers
 
@@ -89,7 +90,7 @@
             case NL:    out.println(); break;
             case NoNL:  out.print(" "); break;
             case NoSP:  break;
-            case UNDEF: throw new ARQInternalErrorException("Explicit tag not no line policy");
+            case UNDEF: throw new ARQInternalErrorException("Tag provided but no line policy");
         }
         out.incIndent();
     }