Liquid variables

Liquid variables are placeholders used in templates to display dynamic content. They are denoted by double curly braces, like `{{ variable_name }}`, and are replaced with actual data when the template is processed. Think of them as variables in a programming language that hold specific pieces of information, such as a user's name or product price. This allows content to be customized automatically for different users or situations without changing the template structure. Liquid variables make templates flexible and adaptable, enabling the seamless rendering of personalized or variable information in web pages, emails, or other digital documents.