<code>supposedlyGlobalVariable := "blah"

ARoutine()
{
   localVariable := "asdf"
   MsgBox, The global variable value is %supposedlyGlobalVariable%.  The local variable value is %localVariable%.
}


^!X:: ;This assigns the hotkey CTRL + ALT + X to run the routine
ARoutine()
return
</code>

Запустите код и результат:

<code>"The global variable value is .  The local variable value is asdf."
</code>

документация состояния:

Variable scope and declarations: With the exception of local variables in functions, all variables are global; that is, their contents may be read or altered by any part of the script.

Почему моя глобальная переменная не имеет области действия внутри функции?