PascalCase is a way of writing words where each word starts with a capital letter and there are no spaces or punctuation between them. For example, the phrase "hello world" would be written as "HelloWorld" in PascalCase. This style is often used in programming languages, especially for naming classes and functions, making it easier to read and understand the code. Using PascalCase helps to clearly distinguish different words in a name, which is particularly useful in coding environments where spaces are not allowed. Many developers prefer this format for its clarity and consistency, contributing to better organization in their projects.