Version 4 supported
This version of Silverstripe CMS is still supported though will not receive any additional features. Go to documentation for the most recent stable version.

Debugging templates

Source code comments

If there is a problem with the rendered html your page is outputting you may need to track down a template or two. The template engine can help you along by displaying source code comments indicating which template is responsible for rendering each block of html on your page.

  environment: 'dev'
  source_file_comments: true