diff --git a/README.md b/README.md
index 3fc221c..1e5b9af 100644
--- a/README.md
+++ b/README.md
@@ -18,12 +18,12 @@ A [GitHub Action](https://github.com/features/actions) to expose useful environm
 | `CI_REPOSITORY_NAME`       | The name of the repository.                                                                                                                                    | `github-env-vars-action`                   |
 | `CI_REPOSITORY_NAME_SLUG`  | The slug of the name of the repository.                                                                                                                        | `github-env-vars-action`                   |
 | `CI_REPOSITORY`            | The owner and repository name. Copy of `GITHUB_REPOSITORY` - for reasons of completeness.                                                                      | `FranzDiebold/github-env-vars-action`      |
-| `CI_REF_SLUG`              | The slug of the branch or tag *ref* that triggered the workflow (i.e. slug of `refs/heads/feat/feature-branch-1`). <br>If neither a branch or tag is available for the event type, the variable will not exist. | `refs-heads-feat-feature-branch-1` |
-| `CI_ACTION_REF_NAME`       | The branch or tag *name* that triggered the workflow. For pull requests it is the *head* branch name.                                                          | `feat/feature-branch-1`                    |
-| `CI_ACTION_REF_NAME_SLUG`  | The slug of the branch or tag *name* that triggered the workflow. For pull requests it is the slug of the *head* branch name.                                  | `feat-feature-branch-1`                    |
-| `CI_REF_NAME`              | The branch or tag *name* that triggered the workflow. <br>If neither a branch or tag is available for the event type, the variable will not exist.             | `feat/feature-branch-1`                    |
-| `CI_REF_NAME_SLUG`         | The slug of the branch or tag *name* that triggered the workflow. <br>If neither a branch or tag is available for the event type, the variable will not exist. | `feat-feature-branch-1`                    |
-| `CI_REF`                   | The branch or tag ref that triggered the workflow. <br>If neither a branch or tag is available for the event type, the variable will not exist. Copy of `GITHUB_REF` - for reasons of completeness. | `refs/heads/feat/feature-branch-1` |
+| `CI_REF_SLUG`              | The slug of the branch, tag or PR number *ref* that triggered the workflow (i.e. slug of `refs/heads/feat/feature-branch-1`). <br>If neither a branch, tag or PR number is available for the event type, the variable will not exist. | `refs-heads-feat-feature-branch-1` or<br> `refs-tags-v1-3-7` or<br> `refs-pull-42-merge` |
+| `CI_ACTION_REF_NAME`       | The branch or tag *name* that triggered the workflow. For pull requests it is the *head* branch name.                                                          | `feat/feature-branch-1` or<br> `v1.3.7`    |
+| `CI_ACTION_REF_NAME_SLUG`  | The slug of the branch or tag *name* that triggered the workflow. For pull requests it is the slug of the *head* branch name.                                  | `feat-feature-branch-1` or<br> `v1-3-7`    |
+| `CI_REF_NAME`              | The branch *name*, tag *name* or PR number that triggered the workflow. <br>If neither a branch, tag or PR number is available for the event type, the variable will not exist. | `feat/feature-branch-1` or<br> `v1.3.7` or<br> `42/merge` |
+| `CI_REF_NAME_SLUG`         | The slug of the branch *name*, tag *name* or PR number that triggered the workflow. <br>If neither a branch, tag or PR number is available for the event type, the variable will not exist. | `feat-feature-branch-1` or<br> `v1-3-7` or<br> `42-merge` |
+| `CI_REF`                   | The branch, tag or PR number *ref* that triggered the workflow. <br>If neither a branch, tag or PR number is available for the event type, the variable will not exist. Copy of `GITHUB_REF` - for reasons of completeness. | `refs/heads/feat/feature-branch-1` or<br> `refs/tags/v1.3.7` or<br> `refs/pull/42/merge` |
 | `CI_HEAD_REF_SLUG`         | The slug of the head branch *name*. <br>Only set for event type *pull request* or forked repositories.                                                         | `feat-feature-branch-1`                    |
 | `CI_HEAD_REF`              | Only set for forked repositories / pull request. The branch of the head repository / the head branch name. Copy of `GITHUB_HEAD_REF` - for reasons of completeness. | `feat/feature-branch-1`               |
 | `CI_BASE_REF_SLUG`         | The slug of the base branch *name*. <br>Only set for event type *pull request* or forked repositories.                                                         | `main`                                     |