Shared Template Folder
Files in the Shared Template folder are included for all Components in the Element Pack.
This folder can contain extra html templates files, There is no restriction on naming. They should also be stored in one of the following sub folders;
bodyStart
bodyEnd
headEnd
headStart
html - contains HTML content
php - files containing PHP
HTML, PHP, CSS, and JS files are supported in the Templates folder at the single Component level.
Shared Template files are only included once in the page per component pack.