> For the complete documentation index, see [llms.txt](https://olab4.gitbook.io/help/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://olab4.gitbook.io/help/advanced-topics.md).

# Advanced Topics

- [Advanced Node Editor](https://olab4.gitbook.io/help/advanced-topics/advanced-node-editor.md): More info about the ANE
- [ChangeLog](https://olab4.gitbook.io/help/advanced-topics/changelog.md): What's new?
- [Differences between OLab4 and OLab3](https://olab4.gitbook.io/help/advanced-topics/changelog/differences-between-olab4-and-olab3.md): A summary of the main changes, rather than a changelog or roadmap.
- [Cached browser data](https://olab4.gitbook.io/help/advanced-topics/cached-browser-data.md): The challenges of dealing with the browser cache and local storage.
- [TTalk](https://olab4.gitbook.io/help/advanced-topics/ttalk.md): Use and design of TTalk maps
- [Import/Export](https://olab4.gitbook.io/help/advanced-topics/import.md): How to import and export OLab maps
- [Users, roles](https://olab4.gitbook.io/help/advanced-topics/users-roles.md): How to manage Users and Roles, access control.
- [CURIOS video mashups](https://olab4.gitbook.io/help/advanced-topics/curios-video-mashups.md): How to use the CURIOS service to insert video segments
- [Glossary](https://olab4.gitbook.io/help/advanced-topics/glossary.md)
- [Groups and Roles](https://olab4.gitbook.io/help/advanced-topics/courses.md): All about the containers of maps (aka Scenarios or webinars). These are means to create sets of users and maps for management by course designers. Often managed externally by a LMS.
- [Script Objects](https://olab4.gitbook.io/help/advanced-topics/script-objects.md): All about objects that contain Javascript
- [CIGARS](https://olab4.gitbook.io/help/advanced-topics/cigars.md): Context Identifier Generation And Retrieval Service
- [Analytics](https://olab4.gitbook.io/help/advanced-topics/analytics.md): Session reports, activity metrics and report
- [Shortcodes](https://olab4.gitbook.io/help/advanced-topics/shortcodes.md): What are those funny codes in square brackets?