A "tick" or "check" is a small mark used to indicate that something has been verified, completed, or approved. It is often represented as a simple checkmark (✓) and is commonly used in lists, forms, and documents to show that a task has been done or an item has been acknowledged. In various contexts, such as project management or education, ticks help organize information and track progress. They provide a visual cue that enhances clarity and efficiency, making it easier for individuals to see what has been accomplished and what still needs attention.