diff --git a/.emacs b/.emacs
index 5f50b32..5a44869 100644
--- a/.emacs
+++ b/.emacs
@@ -58,8 +58,40 @@
 (require 'which-key)
 (which-key-mode)
 ;;+++++++
-;;auctex:
+;;2.4 auctex:
 (setq TeX-auto-save t)
 (setq TeX-parse-self t)
 (setq-default TeX-master nil)
 ;;--end----
+;; 2.5 auto-complet:
+(is-installed 'auto-complete)
+(ac-config-default)
+;; 2.6 ace-window
+(is-installed 'ace-window)
+(global-set-key (kbd "M-o") 'ace-window)
+;; 2.7 avy
+(is-installed 'avy)
+(avy-setup-default)
+(global-set-key (kbd "M-g f") 'avy-goto-line)
+;; 2.8 multiple-cursors
+(is-installed 'multiple-cursors)
+(require 'multiple-cursors)
+(global-set-key (kbd "C-S-c C-S-c") 'mc/edit-lines)
+(global-set-key (kbd "C->") 'mc/mark-next-like-this)
+(global-set-key (kbd "C-<") 'mc/mark-previous-like-this)
+(global-set-key (kbd "C-c C-<") 'mc/mark-all-like-this)
+
+
+
+(custom-set-variables
+ ;; custom-set-variables was added by Custom.
+ ;; If you edit it by hand, you could mess it up, so be careful.
+ ;; Your init file should contain only one such instance.
+ ;; If there is more than one, they won't work right.
+)
+ (custom-set-faces
+ ;; custom-set-faces was added by Custom.
+ ;; If you edit it by hand, you could mess it up, so be careful.
+ ;; Your init file should contain only one such instance.
+ ;; If there is more than one, they won't work right.
+ )