.emacs configuration file is loaded by emacs editor when it starts.
Let's divide the .emacs configuration file into parts to describe it better:
Customized variables
Install user customizations of variable values specified in arguments.
(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.
'(column-number-mode t)
'(desktop-save-mode t)
'(display-battery-mode t)
'(display-time-24hr-format t)
'(display-time-day-and-date nil)
'(display-time-mode t)
'(fringe-mode 0 nil (fringe))
'(menu-bar-mode nil)
'(network-speed-format-string " [%NI %AX %AB] ")
;; '(network-speed-interface-list (list "eth0" "eth1"))
'(network-speed-interface-list (list "eth1"))
'(network-speed-precision 1)
'(network-speed-update-interval 2)
;; '(org-agenda-files (quote ("~/org/task_list.org")))
'(scroll-bar-mode nil)
'(size-indication-mode t)
'(tool-bar-mode nil)
'(tooltip-mode nil)
'(w3m-session-load-last-sessions t))