Project History Page
Every time you make a change to the structure of a project's pinned groups & topics or ignore terms, and perform an exploration, a new version of the project is saved. All the versions of your project can be accessed in its History tab, where you can track every change you have made to the project and perform some actions on each of the project versions.
All versions are listed reverse chronologically, ie, in the descending order of when the version was created.
Renaming Project Versions
You are allowed to rename the versions of the projects you own, to keep track of specific version of a project that you want to refer to in the future. You can rename a project version by clicking the pencil icon next to the name of the version you want to rename.
Tracking changes made to a Project
One of the primary benefits of keeping track of your project version is the ability to visualize the changes made to the Project across versions. To determine the changes you have made to a Project in a specific version, you can click the "Compare" action. By default, the versions that are compared are the version that was selected and the version before it, i.e, by default you will see the changes made to the Project as part of that particular version.
You can compare any arbitrary version of the Project with the currently selected version of the Project by selecting the version you are interested in the version selector in the comparison popup.
Reverting to an older version of a Project
When going through the changes made to a Project, if you notice there are some change that you want to "undo" to a topic of the project, you can "revert" to an older version of the Project. After you identify the version of the project you would like to revert to, you can click the 'Revert' icon to revert to that version.
Once you have clicked the button and have confirmed you would like to revert to an older version, the project will automatically be re-explored so that the statistics reflect the updated groups & topics.
The "Published As" column
If a model has been created from the project, every version of the model corresponds to a project version. The "Published As" column lets you know which version of the model the corresponding project version has been published as.