学城时序图插件 is a free Chrome add-on developed by 往事如锋. It falls under the category of Browsers and the subcategory of Add-ons & Tools. This add-on is specifically designed for users who create complex sequence diagrams using PlantUML.

With 学城时序图插件, users can freeze the participant information at the top of the diagram when scrolling down. This feature is especially useful for users who work with large sequence diagrams and want to keep the participant information visible at all times, even when scrolling through the diagram.

By freezing the participant information, users can easily navigate through the sequence diagram without losing track of the participants involved. This add-on provides a convenient and efficient way to work with complex sequence diagrams in PlantUML, ensuring a smooth and seamless diagramming experience.

Overall, 学城时序图插件 is a valuable tool for users who frequently create and work with PlantUML sequence diagrams. Its ability to freeze participant information makes it easier to navigate and understand complex diagrams, enhancing productivity and efficiency.