diff --git a/scriba-mode.el b/scriba-mode.el
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+;;; Variables
+
+(defgroup scriba nil
+  "Scriba Mode."
+  :link '(custom-group-link :tag "Font Lock Faces group" font-lock-faces)
+  :group 'docs)
+
+(defcustom scriba-mode-hook nil
+  "List of functions to call when entering Scriba mode."
+  :type 'hook
+  :options '(flyspell-mode))
+
+;;; Syntax highlighting
+
+(defvar scriba-font-lock-keywords
+  '(("@[a-zA-Z]+" . font-lock-keyword-face)
+    ("@begin(\\([a-zA-Z]+\\))" 1 font-lock-function-name-face)
+    ("@end(\\([a-zA-Z]+\\))" 1 font-lock-function-name-face)))
+
+;;; Text insertion and manipulation
+
+(defun scriba-insert-at-sign ()
+  (interactive)
+  (insert "@"))
+
+(defun scriba-insert-block (tag-name)
+  "Insert a @begin/@end block."
+  (interactive (list (read-string "Tag: ")))
+  (insert "@begin(" tag-name ")\n\n@end(" tag-name ")"))
+
+(defun scriba-insert-section (title)
+  "Insert a section."
+  (interactive (list (read-string "Title: ")))
+  (insert "@begin(section)\n@title(" title ")\n\n@end(section)"))
+
+(defun scriba-wrap-text (before-text after-text)
+  "Wrap the selected region in text."
+  (let ((begin (mark))
+        (end (point)))
+    (save-restriction
+      (narrow-to-region begin end)
+      (goto-char (point-min))
+      (insert before-text)
+      (goto-char (point-max))
+      (insert after-text))))
+
+(defun scriba-apply-markup (tag)
+  "Wrap the selected region in markup."
+  (scriba-wrap-text (concat "@" tag "(")
+                    ")"))
+
+(defun scriba-boldify ()
+  (interactive)
+  (scriba-apply-markup "b"))
+
+(defun scriba-italicize ()
+  (interactive)
+  (scriba-apply-markup "i"))
+
+(defun scriba-underline ()
+  (interactive)
+  (scriba-apply-markup "u"))
+
+(defun scriba-strikethrough ()
+  (interactive)
+  (scriba-apply-markup "strike"))
+
+(defun scriba-codify ()
+  (interactive)
+  (scriba-apply-markup "c"))
+
+(defun scriba-superscript ()
+  (interactive)
+  (scriba-apply-markup "sup"))
+
+(defun scriba-subscript ()
+  (interactive)
+  (scriba-apply-markup "sub"))
+
+;;; Keybindings
+
+(defvar scriba-mode-map
+  (let ((map (make-keymap)))
+    ;; Inserting strings
+    (define-key map "\t"        'scriba-insert-at-sign)
+    (define-key map "\C-c\C-cb" 'scriba-insert-block)
+    (define-key map "\C-c\C-cs" 'scriba-insert-section)
+
+    ;; Markup
+    (define-key map "\C-c\C-sb" 'scriba-boldify)
+    (define-key map "\C-c\C-si" 'scriba-italicize)
+    (define-key map "\C-c\C-su" 'scriba-underline)
+    (define-key map "\C-c\C-ss" 'scriba-strikethrough)
+    (define-key map "\C-c\C-sc" 'scriba-codify)
+    (define-key map "\C-c\C-s^" 'scriba-superscript)
+    (define-key map "\C-c\C-sv" 'scriba-subscript)
+    map))
+
+;;; Menu
+
+(easy-menu-define scriba-mode-menu
+  scriba-mode-map
+  "Menu used for `scriba-mode'."
+  '("Scriba"
+    ["Insert block"   scriba-insert-block   t]
+    ["Insert section" scriba-insert-section t]
+    "----"
+    ["Bold"           scriba-boldify        t]
+    ["Italic"         scriba-italicize      t]
+    ["Underline"      scriba-underline      t]
+    ["Strikethrough"  scriba-strikethrough  t]
+    ["Code"           scriba-codify         t]
+    ["Superscript"    scriba-superscript    t]
+    ["Subscript"      scriba-subscript      t]))
+
+;;; File extensions
+
+(add-to-list 'auto-mode-alist
+             '("\\.scr\\'" . scriba-mode))
+
+;;; Mode
+
+(define-derived-mode scriba-mode text-mode "Scriba"
+  "Major mode for editing Scriba files."
+  (setq font-lock-defaults '((scriba-font-lock-keywords))))
+
+(provide 'scriba)