--- a/src/java.compiler/share/classes/javax/lang/model/element/ElementVisitor.java	Thu Jan 18 02:25:18 2018 +0300
+++ b/src/java.compiler/share/classes/javax/lang/model/element/ElementVisitor.java	Wed Jan 17 17:53:37 2018 -0800
@@ -152,8 +152,8 @@
     /**
      * Visits a module element.
      *
-     * @implSpec Visits a {@code ModuleElement} by calling {@code
-     * visitUnknown(e, p)}.
+     * @implSpec The default implementation visits a {@code
+     * ModuleElement} by calling {@code visitUnknown(e, p)}.
      *
      * @param e  the element to visit
      * @param p  a visitor-specified parameter

--- a/src/java.compiler/share/classes/javax/lang/model/element/ModuleElement.java	Thu Jan 18 02:25:18 2018 +0300
+++ b/src/java.compiler/share/classes/javax/lang/model/element/ModuleElement.java	Wed Jan 17 17:53:37 2018 -0800
@@ -201,11 +201,10 @@
          * Visits any directive as if by passing itself to that
          * directive's {@link Directive#accept accept} method and passing
          * {@code null} for the additional parameter.
-         * The invocation {@code v.visit(d)} is equivalent to
-         * {@code d.accept(v, null)}.
+         *
          * @param d  the directive to visit
          * @return a visitor-specified result
-         * @implSpec This implementation is {@code visit(d, null)}
+         * @implSpec The default implementation is {@code d.accept(v, null)}.
          */
         default R visit(Directive d) {
             return d.accept(this, null);
@@ -214,11 +213,11 @@
         /**
          * Visits any directive as if by passing itself to that
          * directive's {@link Directive#accept accept} method.
-         * The invocation {@code v.visit(d, p)} is equivalent to
-         * {@code d.accept(v, p)}.
+         *
          * @param d  the directive to visit
          * @param p  a visitor-specified parameter
          * @return a visitor-specified result
+         * @implSpec The default implementation is {@code d.accept(v, p)}.
          */
         default R visit(Directive d, P p) {
             return d.accept(this, p);
@@ -271,7 +270,7 @@
          * @param p  a visitor-specified parameter
          * @return a visitor-specified result
          * @throws UnknownDirectiveException a visitor implementation may optionally throw this exception
-         * @implSpec This implementation throws {@code new UnknownDirectiveException(d, p)}.
+         * @implSpec The default implementation throws {@code new UnknownDirectiveException(d, p)}.
          */
         default R visitUnknown(Directive d, P p) {
             throw new UnknownDirectiveException(d, p);