Hidden templates aren’t showing up in Finder
ExpressionEngine supports hidden templates where the template name starts with a period (.), e.g. .header. These templates aren’t displayed to other Control Panel users and will return a 404 when requested in the URL, but can still be embedded in templates.
On your Mac, Finder treats any files that start with a period (.) as hidden files – which is great, unless you want to edit them. But there’s a couple of straightforward solutions:
In your editor
In Coda or Textmate, it’s as easy as switching on the Show Invisible Files in the View menu.