Haml

Uses indentation to represent HTML nesting, automatically handling closing tags—this reduces errors and mirrors document structure for better readability, as shown in the README's list and pepper example.

Simplifies adding classes and IDs with #id.class syntax, defaulting to div for unnamed tags, making markup concise and intuitive, similar to CSS styling.

Allows embedding Ruby code with = for output and - for execution, supporting control statements like if and while for dynamic content generation seamlessly.

Eliminates redundant closing tags and repetitive markup, leading to cleaner templates that are easier to maintain, as emphasized in the philosophy section.