diff --git a/lisp/my/my-tool-bar.el b/lisp/my/my-tool-bar.el
new file mode 100644
index 00000000..cab9a099
--- /dev/null
+++ b/lisp/my/my-tool-bar.el
@@ -0,0 +1,117 @@
+;;; my-tool-bar.el --- Tool bar  -*- lexical-binding: t -*-
+
+;;; Commentary:
+
+;;; Code:
+(defun my-tool-bar-newline ()
+  "Newline."
+  "\n")
+
+(defun my-tool-bar-function-save (event)
+  "Pop up the same menu as displayed by the menu bar.
+Used by `tab-bar-format-menu-bar'."
+  (interactive "e")
+  (let ()
+    ;;(message "%s" event)
+    (save-buffer)
+    ;;(message "foo")
+    ))
+
+(defvar my-tool-bar-button-save "Save "
+  "Button for going back in tab history.")
+
+(defun my-tool-bar-function-open (event)
+  "Pop up the same menu as displayed by the menu bar.
+Used by `tab-bar-format-menu-bar'."
+  (interactive "e")
+  (let ()
+    ;;(message "%s" event)
+    (if (featurep 'counsel)
+        (counsel-find-file)
+      (find-file))
+    ;;(message "foo")
+    ))
+
+(defvar my-tool-bar-button-open "Open "
+  "Button for going back in tab history.")
+
+;; (defun my-tool-bar-format-save ()
+;;   "Produce the Menu button for the tool bar that shows the menu bar."
+;;   `((menu-bar menu-item ,my-tool-bar-button-save
+;;      my-tool-bar-function-save :help "Save buffer")))
+
+(defun my-tool-bar-format ()
+  "Produce tool-bar buttons for the tab bar.
+These buttons will be shown when `my-tool-bar-mode' is enabled.
+You can hide these buttons by customizing `tab-bar-format' and removing
+`my-tool-bar-format' from it."
+  (when my-tool-bar-mode
+    `(;;(sep-history-back menu-item ,(tab-bar-separator) ignore)
+      (save
+       menu-item ,my-tool-bar-button-save my-tool-bar-function-save
+       :help "Save")
+      ;;(sep-test menu-item "" ignore)
+      (open
+       menu-item ,my-tool-bar-button-open my-tool-bar-function-open
+       :help "Open File...")
+      (sep-tool-bar menu-item ,(my-tool-bar-newline) ignore)
+      )))
+
+(defun my-tool-bar--load-buttons ()
+  "Load the icons for the tool bar buttons."
+  ;; (emoji "<empji>")     see e.g. https://emojipedia.org/hamburger
+  ;; (symbol "<unicode>")  see e.g. https://www.compart.com/en/unicode/U+2630
+  (require 'icons)
+  
+  (unless (iconp 'my-tool-bar-icon-save)
+    (define-icon my-tool-bar-icon-save nil
+      `((image "save.xpm"
+               :height (1.5 . em)
+               :margin ,tab-bar-button-margin
+               :ascent center)
+        (emoji "💾")
+        (symbol "🖫")
+        (text "Save"
+              ;; :face tab-bar-tab-inactive
+              ))
+      "Icon for the menu bar."
+      :version "29.1"))
+  (setq my-tool-bar-button-save (icon-string 'my-tool-bar-icon-save))
+  
+  (unless (iconp 'my-tool-bar-icon-open)
+    (define-icon my-tool-bar-icon-open nil
+      `((image "open.xpm"
+               :height (1.5 . em)
+               :margin ,tab-bar-button-margin
+               :ascent center)
+        (emoji "📂")
+        (symbol "🗁")
+        (text "Open"
+              ;; :face tab-bar-tab-inactive
+              ))
+      "Icon for the menu bar."
+      :version "29.1"))
+  (setq my-tool-bar-button-open (icon-string 'my-tool-bar-icon-open))
+
+)
+
+(define-minor-mode my-tool-bar-mode
+  "Toggle tab history mode for the tab bar.
+Tab history mode remembers window configurations used in every tab,
+and can restore them."
+  :global t :group 'tab-bar
+  (if my-tool-bar-mode
+      (progn
+        (my-tool-bar--load-buttons)
+
+        ;;(add-hook 'pre-command-hook #'tab-bar--history-pre-change)
+        ;;(add-hook 'window-configuration-change-hook #'tab-bar--history-change)
+        )
+    ;;(remove-hook 'pre-command-hook #'tab-bar--history-pre-change)
+    ;;(remove-hook 'window-configuration-change-hook #'tab-bar--history-change)
+    )
+  )
+
+
+(provide 'my-tool-bar)
+;;; my-tool-bar.el ends here
diff --git a/settings/general-settings.el b/settings/general-settings.el
index 2797a46e..e02fe865 100644
--- a/settings/general-settings.el
+++ b/settings/general-settings.el
@@ -846,5 +846,10 @@ Version 2016-07-13"
     )
   )
 
+(use-package calendar
+  :defer t
+  :config
+  (setq calendar-week-start-day 1))
+
 (provide 'general-settings)
 ;;; general-settings.el ends here
diff --git a/settings/gui-settings.el b/settings/gui-settings.el
index 0f2e98f7..6930f057 100644
--- a/settings/gui-settings.el
+++ b/settings/gui-settings.el
@@ -113,7 +113,12 @@ DISPLAY-START: `integer', e.g. 3820"
                 ("s-t" . tab-bar-new-tab)
                 ("s-w" . tab-bar-close-tab))))
   :config
+
   (add-to-list 'tab-bar-format #'tab-bar-format-menu-bar)
+
+  (require 'my-tool-bar)
+  (add-to-list 'tab-bar-format #'my-tool-bar-format)
+
   (tab-bar-rename-tab "Default")
   (defun my-tab-view-elisp ()
     (if (tab-bar--tab-index-by-name "ELisp IDE")
@@ -347,7 +352,8 @@ DISPLAY-START: `integer', e.g. 3820"
     ))
 
 (use-package dashboard
-  :defer 0.1
+  :defer nil
+  ;; :defer 0.1
   :delight (dashboard-mode "Db")  ;; "\u01F153
   :after (all-the-icons)
   :commands (dashboard-mode)