# Key Features ![](/files/ePGCEEipd6mo0rlyL8GO) #### The range of course offerings is wide, and diverse in all fields E-CLASS currently offers 13 main categories of courses, from software development to music, with a variety of subcategories under each major category. For example, in the subcategory of Software Development, there are 10 separate courses for users to choose from. Courses with a variety of fields: Development Business Finance & Accounting IT & Software Office Productivity Personal Development Design Marketing Lifestyle Photography & Video Health & Fitness Music Teaching & Academics #### The range of course offerings is wide, and diverse in all fields E-CLASS currently offers 13 main categories of courses, from software development to music, with a variety of subcategories under each major category. For example, in the subcategory of Software Development, there are 10 separate courses for users to choose from. Courses with a variety of fields: Development Business Finance & Accounting IT & Software Office Productivity Personal Development Design Marketing Lifestyle Photography & Video Health & Fitness Music Teaching & Academics --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://documentations.bizverse.world/e-class-in-bizverse/key-features.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.