The Ordered List Style plugin for Obsidian allows users to customize the appearance of ordered lists with ease. With this plugin, you can set the list style inline by adding details in the first list item. For example, you can use curly brackets to specify the desired style, such as {A} for upper-roman or {a} for lower-alpha. Additionally, there are shorthand options available for common styles like decimal with leading zero. This plugin is particularly useful when creating lists that require a specific formatting scheme, making it easier to organize and present information in a clear and concise manner.