Modifier et compiler code source

Bonjour à tous,

Je ne connais pas grand chose en programmation (pour ne pas dire rien).
J'ai trouvé sur ce lien une petite aplli (http://www.brightrev.com/how-to/windows/46-brightrevs-taskbar-autohide-utility.html) pour laquelle le programmeur a généreusement mis à disposition le code source.
Je souhaiterais modifier une des lignes de commande.
Voici mes questions:
Dans quel langage est écrit le code source (C,C++,visual basic...)?
Comment l'éditer et le compiler?Avec quel programme?

Code source
;------------------------------------------------
; Taskbar Autohide 0.2
; AutoHotkey application
; by Carl Campos at Brightrev.com
; Application icon from the Crystal Clear set
; https://commons.wikimedia.org/wiki/Crystal_Clear
;------------------------------------------------

#SingleInstance Off
Menu, Tray, NoStandard
Menu, Tray, Add, Toggle taskbar autohide, Toggle
Menu, Tray, Add, About
Menu, Tray, Add, Exit
Menu, Tray, Default, Toggle taskbar autohide
Menu, Tray, Tip, Double-click or WIN+A to toggle tasbkar autohide

;------------------------------------------------
; WIN+A Shortcut key to Toggle taskbar autohide
;------------------------------------------------
#a::Gosub Toggle

;----------------------------------------------------------------------------------
; Launch Taskbar and Start Menu Proprties
; Wait for the window to appear
; Send the U key to Toggle autohide, the A key to apply and the Escape key to exit
;----------------------------------------------------------------------------------
Toggle:
Run rundll32.exe shell32.dll`,Options_RunDLL 1
WinWait, Taskbar and Start Menu Properties
WinActivate, Taskbar and Start Menu Properties
Send ua
WinClose, Taskbar and Start Menu Properties
Return

;-------------------------------------------------
; Displays a text box with application information
; Creates a link to the application's site
;-------------------------------------------------
About:
Gui, Add, Text, cBlack, Taskbar Autohide 0.1
Gui, Add, Text, cBlack, AutoHotkey app by Carl Campos
Gui, Font, underline
Gui, Add, Text, cBlue gLaunchBrightrev, https://brightrev.com/
Gui, Font, norm
Gui, Add, Button, Default, OK
Gui, Show
return

;---------------------------------------------------------
; Called by gLaunchBrightrev when the user clicks the
; simulated link above
;---------------------------------------------------------
LaunchBrightrev:
Run www.brightrev.com
return

;----------------------------------------------------
; Closes the window and frees memory when you click OK
;----------------------------------------------------
ButtonOK:
Gui, Destroy
return

;---------------------
; Exits the application
;---------------------
Exit:
exitapp

Merci pour vos réponses.