Source string
- A machine name to be used as the default CSS class. It must only contain uppercase letters, lowercase letters, numbers, hyphens and underscores.
Used at the following places
- Backdrop CMS: 1.21 (1), 1.22 (1), 1.23 (1), 1.24 (1), 1.25 (1), 1.26 (1), 1.27 (1)