diff --git a/ChangeLog b/ChangeLog
index 1724593d..a1e69c0b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,13 @@
 2026-06-16  Bob Weiner  <rsw@gnu.org>
 
+* test/demo-tests.el (fast-demo-display-kotl-starting-from-cell): Fix to
+    erase viespec modification to "kotl/EXAMPLE.kotl" which test was leaving.
+
+* hsys-activities.el: Improve documentation.
+
+* hui.el (hui:ebut-message, hui:ibut-message): Fix 'actype' setting so
+    it never ends up nil.
+
 * hsys-org.el (hsys-org-link-at-p): Rewrite to handle non-delimited Org links,
     such as: file:my-file::my-text.  Leave file:// links for www-url ibtype
     by using 'hpath:www-at-p' test as Org url test will match to this:
diff --git a/hsys-activities.el b/hsys-activities.el
index e197aeb3..7c135d48 100644
--- a/hsys-activities.el
+++ b/hsys-activities.el
@@ -3,7 +3,7 @@
 ;; Author:       Mats Lidell
 ;;
 ;; Orig-Date:     7-Dec-25 at 22:48:29
-;; Last-Mod:      2-Jan-26 at 21:31:06 by Bob Weiner
+;; Last-Mod:     16-Jun-26 at 18:32:44 by Bob Weiner
 ;;
 ;; SPDX-License-Identifier: GPL-3.0-or-later
 ;;
@@ -14,13 +14,19 @@
 
 ;;; Commentary:
 ;;
-;; Use as action button <hsys-activity "Activity">
+;; The 'activities' package persistently saves and restores window
+;; configurations as well as tab and frame configurations.
 ;;
-;; Create "Activity" if it does not exist.  If "Activity" is not
-;; active, switch to its latest state.  If "Activity" is active,
-;; revert it to its default state.  If "Activity" is active and the
-;; action button is called with a prefix argument a new default state
-;; is set.
+;; This library defines a single function, hsys-activities, that can be used
+;; as an action button to interface the `activities' package for use
+;; with Hyperbole.  Adding the action button:
+;;   <hsys-activities "Activity">
+;; to any text achieves the following:
+;;   1. If "Activity" does not exist, create it.
+;;   2.  If "Activity" is not active, switch to its latest saved state.
+;;   3.  If "Activity" is active, revert to its default state.
+;;   4.  If "Activity" is active and the action button is called with
+;;       a prefix argument, a new default state is set.
 
 ;;; Code:
 
diff --git a/hui.el b/hui.el
index 77a90454..e73c7f95 100644
--- a/hui.el
+++ b/hui.el
@@ -3,7 +3,7 @@
 ;; Author:       Bob Weiner
 ;;
 ;; Orig-Date:    19-Sep-91 at 21:42:03
-;; Last-Mod:      5-Jun-26 at 07:58:00 by Bob Weiner
+;; Last-Mod:     16-Jun-26 at 17:51:27 by Bob Weiner
 ;;
 ;; SPDX-License-Identifier: GPL-3.0-or-later
 ;;
@@ -1693,7 +1693,9 @@ from the button that point is within."
 With BUT-EDIT-FLAG non-nil message about ebut being edited."
   (let ((actype (symbol-name (hattr:get 'hbut:current 'actype)))
 	(args (hattr:get 'hbut:current 'args)))
-    (setq actype (actype:def-symbol actype))
+    (setq actype (or (actype:def-symbol (actype:elisp-symbol actype))
+		     (when (symbolp actype)
+                       actype)))
     (message "%s%s%s %s %S"
 	     ebut:label-start
 	     (hbut:key-to-label (hattr:get 'hbut:current 'lbl-key))
@@ -1944,7 +1946,9 @@ within."
 With BUT-EDIT-FLAG non-nil message about ibut being edited."
   (let ((actype (symbol-name (hattr:get 'hbut:current 'actype)))
 	(args (hattr:get 'hbut:current 'args)))
-    (setq actype (actype:def-symbol actype))
+    (setq actype (or (actype:def-symbol (actype:elisp-symbol actype))
+		     (when (symbolp actype)
+                       actype)))
     (message "%s%s%s %s %S"
 	     ibut:label-start
 	     (hbut:key-to-label (hattr:get 'hbut:current 'lbl-key))
diff --git a/test/demo-tests.el b/test/demo-tests.el
index cd2883b5..7587e246 100644
--- a/test/demo-tests.el
+++ b/test/demo-tests.el
@@ -3,7 +3,7 @@
 ;; Author:       Mats Lidell <matsl@gnu.org>
 ;;
 ;; Orig-Date:    30-Jan-21 at 12:00:00
-;; Last-Mod:     16-Mar-26 at 00:16:06 by Bob Weiner
+;; Last-Mod:     16-Jun-26 at 22:09:58 by Bob Weiner
 ;;
 ;; SPDX-License-Identifier: GPL-3.0-or-later
 ;;
@@ -807,12 +807,19 @@ enough files with matching mode loaded."
       (insert (format "<%skotl/EXAMPLE.kotl#3b10|c2en>"
 		      default-directory))
       (goto-char 5)
-      (action-key)
-      (setq buf (current-buffer))
-      (should (string-suffix-p "EXAMPLE.kotl" buffer-file-name))
-      (should (looking-at-p "Cell Transposition:"))
-      ;; Ensure visible cell length is cutoff at 2 lines
-      (should (= 2 (hypb:string-count-matches "\n" (kcell-view:contents)))))))
+      (unwind-protect
+          (progn (action-key)
+                 (setq buf (current-buffer))
+                 (should (string-suffix-p "EXAMPLE.kotl" buffer-file-name))
+                 (should (looking-at-p "Cell Transposition:"))
+                 ;; Ensure visible cell length is cutoff at 2 lines
+                 (should (= 2 (hypb:string-count-matches
+                               "\n" (kcell-view:contents)))))
+        ;; Restore kotl/EXAMPLE.kotl to its original viewspec and kill the
+        ;; buffer so it is unchanged.
+        (kvspec:activate "ben")
+        (set-buffer-modified-p nil)
+        (kill-buffer (current-buffer))))))
 
 (provide 'demo-tests)