Navigating SVN using the Repo-Browser
Tortoise SVN has a feature that allows browsing of SVN similar to how you would browse files in file explorer, without having to checkout individual repositories. In other words, you can browse the contents of a repository without downloading the entire copy to your computer.
It also allows a quick view of a repository's file structure.
To start, open file explorer and right-click in an empty space. Choose Tortoise SVN > Repo-browser

A URL window will appear, type in the following URL replacing REPO with the name of the repo you want to browse.
https://eecl-svn-prop.research.colostate.edu/svn/REPO

In this example, I will substitute REPO with the test repository

Click OK.
If prompted about a certificate, choose "Accept the certificate permanently"

If prompted for credentials, use your NETID credentials.
A window should now appear with the file structure of the repository. Expand the very small left-pane of the window by dragging out the separator until it looks something like this:

From here, you can browse files and open them as you would in file explorer.
For repositories that you access frequently, you can add a bookmark. This can be added by right clicking the repository url in the left-hand pane and selecting "Add to Bookmarks":
