Major mode for editing SEML (S-Expression Markup Language) files

With compare 2 files, SEML is short and easy to understand for Lisp hacker. Since SEML can use Elisp freely in SEML file, I think that it has the same power as PHP. It is already set to automatically enable seml-mode for typical seml file extensions as follows, but if you want to enable seml-mode for special extensions or for other reasons, you need to set it to an optional setting.

Source: github.com