diff --git a/dap4/d4servlet/src/main/java/dap4/servlet/CDMWrap.java b/dap4/d4servlet/src/main/java/dap4/servlet/CDMWrap.java
index fe0dcea1ab..850caa9a18 100644
--- a/dap4/d4servlet/src/main/java/dap4/servlet/CDMWrap.java
+++ b/dap4/d4servlet/src/main/java/dap4/servlet/CDMWrap.java
@@ -184,7 +184,7 @@ public void close() throws IOException {
    */
 
   /**
-   * Track generic CDMNode <-> DapNode
+   * Track generic CDMNode {@literal <->} DapNode
    */
   protected void recordNode(CDMNode cdm, DapNode dap) {
     assert this.nodemap.get(cdm) == null && this.nodemap.get(dap) == null;
@@ -192,7 +192,7 @@ protected void recordNode(CDMNode cdm, DapNode dap) {
   }
 
   /**
-   * Track Variable <-> DapVariable
+   * Track Variable {@literal <->} DapVariable
    */
   protected void recordVar(Variable cdm, DapVariable dap) {
     cdm = CDMUtil.unwrap(cdm);
@@ -201,7 +201,7 @@ protected void recordVar(Variable cdm, DapVariable dap) {
   }
 
   /**
-   * Track Variable <-> DapStructure
+   * Track Variable {@literal <->} DapStructure
    */
   protected void recordStruct(Variable cdm, DapStructure dap) {
     cdm = CDMUtil.unwrap(cdm);
@@ -210,7 +210,7 @@ protected void recordStruct(Variable cdm, DapStructure dap) {
   }
 
   /**
-   * Track Variable <-> DapSequence
+   * Track Variable {@literal <->} DapSequence
    */
   protected void recordSeq(Variable cdm, DapSequence dap) {
     cdm = CDMUtil.unwrap(cdm);
diff --git a/dap4/d4servlet/src/main/java/dap4/servlet/ChunkWriter.java b/dap4/d4servlet/src/main/java/dap4/servlet/ChunkWriter.java
index 7fc0409640..b342bb3c0c 100644
--- a/dap4/d4servlet/src/main/java/dap4/servlet/ChunkWriter.java
+++ b/dap4/d4servlet/src/main/java/dap4/servlet/ChunkWriter.java
@@ -227,10 +227,10 @@ void sendDXR(byte[] dxr8) throws IOException {
    * else reset the current chunk thus
    * losing any partial write.
    *
-   * @param httpcode The httpcode, 0 => ignore
-   * @param msg The <Error> <Message>, null => ignore
-   * @param cxt The <Error> <Context>, null => ignore
-   * @param other The <Error> <OtherInformation>, null => ignore
+   * @param httpcode The httpcode, 0 {@literal =>} ignore
+   * @param msg The <Error> <Message>, null {@literal =>} ignore
+   * @param cxt The <Error> <Context>, null {@literal =>} ignore
+   * @param other The <Error> <OtherInformation>, null {@literal =>} ignore
    * @throws IOException on IO related errors
    */
   public void writeError(int httpcode, String msg, String cxt, String other) throws IOException {
diff --git a/dap4/d4servlet/src/main/java/dap4/servlet/DapController.java b/dap4/d4servlet/src/main/java/dap4/servlet/DapController.java
index 413ddcfe87..f72b36925f 100644
--- a/dap4/d4servlet/src/main/java/dap4/servlet/DapController.java
+++ b/dap4/d4servlet/src/main/java/dap4/servlet/DapController.java
@@ -435,7 +435,7 @@ protected DapRequest getRequestState(HttpServletRequest rq, HttpServletResponse
    * Generate an error based on the parameters
    *
    * @param drq DapRequest
-   * @param httpcode 0=>no code specified
+   * @param httpcode 0 {@literal =>} no code specified
    * @param t exception that caused the error; may be null
    * @throws IOException
    */