Don't change a URL to an existing page, unless it's necessary. If you must make a change,
make it unnoticeable for users, because we don't want them to receive `404 Not Found`
if we can avoid it. This table should help:
| URL description | Example | What to do |
|---|---|---|
| Can be used in scripts and automation | `snippet#raw` | Support both an old and new URL for one major release. Then, support a redirect from an old URL to a new URL for another major release. |
| Likely to be saved or shared | `issue#show` | Add a redirect from an old URL to a new URL until the next major release. |
| Limited use, unlikely to be shared | `admin#labels` | No extra steps required. |
## Migrating unscoped routes
Currently, the majority of routes are placed under the `/-/` scope. However,
