Add more tweaks for default behavior and add vterm package

configuration.org

@@ -60,7 +60,7 @@ Then add package repositories
 
 #+BEGIN_SRC emacs-lisp
 (require 'package)
-                                        ;  (add-to-list 'package-archives '("melpa" . "https://melpa.org/packages/") t)
+(add-to-list 'package-archives '("melpa" . "https://melpa.org/packages/") t)
 (add-to-list 'package-archives '("nongnu" . "https://elpa.nongnu.org/nongnu/") t)
 (unless (fboundp 'package-activate-all) (package-initialize))
 #+END_SRC
@@ -156,6 +156,11 @@ Remember where I was last time I edited a file
 (save-place-mode 1)
 #+end_src
 
+Never use graphical dialog box
+#+begin_src emacs-lisp
+(setq use-dialog-box nil)
+#+end_src
+
 ** MacOS
 
 As I often use Emacs on MacOS, I need the right option (alt) key to behave *as* an option key and
@@ -324,8 +329,8 @@ Select the font I will use depending on the system
     (setq mh-font-variable "DejaVu Sans")
     )
   )
-(set-face-attribute 'default nil :font mh-font-fixed :weight 'light :height 160)
-(set-face-attribute 'fixed-pitch nil :font mh-font-fixed :weight 'light :height 160)
+(set-face-attribute 'default nil :font mh-font-fixed :weight 'light :height 140)
+(set-face-attribute 'fixed-pitch nil :font mh-font-fixed :weight 'light :height 140)
 (set-face-attribute 'variable-pitch nil :font mh-font-variable :weight 'light :height 1.3)
 (set-frame-font mh-font-fixed nil t)
 #+end_src
@@ -1186,6 +1191,31 @@ cargo install slint-lsp
 (use-package protobuf-mode)
 #+end_src
 
+** Shell
+
+Use =vterm= as a terminal emulator. Vterm needs to compile an external module. To build the module,
+you need CMake and libtool.
+
+On debian/ubuntu like systems:
+
+#+begin_src shell
+sudo apt install cmake libtool-bin
+#+end_src
+
+On Macos with brew
+#+begin_src shell
+brew install libtool cmake
+#+end_src
+
+#+begin_src emacs-lisp
+(use-package vterm
+  :commands vterm
+  :custom
+  (vterm-always-compile-module t)
+  :bind
+  ("<f7>" . vterm))
+#+end_src
+
 * Spell checking
 
 First, set =aspell= to be the spell checking program instead of =ispell=