> For the complete documentation index, see [llms.txt](https://olab4.gitbook.io/teachers/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/teachers/whose-line-is-it-anyway.md).

# Whose line is it anyway?

Some notes on **version control**: explore how this is supported by GitBook

GitBook has **Variants**. So on this space, we have two variants: one for the CPD audience and one for the biking audience. <https://docs.gitbook.com/editing-content/variants> for more info on this.&#x20;

When you create a Variant, a copy or new version of your content is created. Thereafter, each Variant is edited separately; changes on one Variant are not replicated to another Variant.&#x20;

I also note that you can share links to pages: <https://docs.gitbook.com/features/shareable-links> -- this may be another way to provide controlled access to our content.&#x20;

You can link Gitbook to Github and tie into the branch system there so that Variants are linked automatically to their branches.&#x20;

### Roll-back and Tracked Changes

Rats, well I just messed up some changes that I made while editing this very section. I did not Save my new edits and Merged the old with the new. Sigh.&#x20;

You can roll back (as we just did, accidentally) to a previous draft version. See notes at <https://docs.gitbook.com/collaboration/restore-a-draft> -- and that help page has an error. It talks about the '**Merged**' tab, but neglects to mention that you must click on the **Edits** view on the left side first.&#x20;

And if you click on the ellipses in the top right corner of the small \[Save] box, you can highlight the changes you have just made.&#x20;