This is your choice. Many developers like to give their template a ".tpl" file extension, while other prefer to use ".htm". As long as you include the correct file extension when you declare your template file, any file extension will work.
This is your choice. Many developers like to give their template a ".tpl" file extension, while other prefer to use ".htm". As long as you include the correct file extension when you declare your template file, any file extension will work.