> Portal Navigation: > > - Append `.md` to any URL under `https://dev.wix.com/docs/` to get its markdown version. > - Pages are either content pages (article or reference text) or menu pages (a list of links to child pages). > - To get a menu page, truncate any URL to a parent path and append `.md` (e.g. `https://dev.wix.com/docs/sdk.md`, `https://dev.wix.com/docs/sdk/core-modules.md`). > - Top-level index of all portals: https://dev.wix.com/docs/llms.txt > - Full concatenated docs: https://dev.wix.com/docs/llms-full.txt ## Resource: wix-crm-backend ## Namespace: contacts ## Article: About Labels ## Article Link: https://dev.wix.com/docs/velo/apis/wix-crm-backend/contacts/about-labels.md ## Article Content: # About Labels Labels allow site collaborators to segment contacts in their Contact List. Contact labels are useful for targeting specific audiences for email campaigns or bulk actions. For more information on how labels are used, see [Creating Contact Labels](https://support.wix.com/en/article/creating-contact-labels).