> For the complete documentation index, see [llms.txt](https://docs.zephyrintel.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.zephyrintel.com/documents.md).

# Documents

The Documentation hub is where you find, preview, upload and manage files for your install base: manuals, datasheets, drawings and certificates. Sales reps, service managers and account owners use it during calls, and to attach new files to a customer or asset.

The hub has two tabs. **Documents** holds every file you upload. **Model Manuals** holds manuals scoped to a brand and model, which matching assets pick up automatically.

* [Documents overview](/documents/documents-overview.md): What the hub holds and the stats strip.
* [Find a document](/documents/find-a-document.md): Search by name, description or serial number, and filter by type.
* [Preview, open and download documents](/documents/preview-open-and-download-documents.md): The PDF viewer, new-tab opening and downloading.
* [Upload documents](/documents/upload-documents.md): Drag-and-drop, multi-file batches and per-file details.
* [Link documents to customers and assets](/documents/link-documents-to-customers-and-assets.md): Attaching a customer and serial numbers.
* [Edit a document](/documents/edit-a-document.md): Changing a name, type, tags and links.
* [Delete a document](/documents/delete-a-document.md): Removing a document from the hub.
* [Model manuals](/documents/model-manuals.md): Manuals scoped to a brand and model.
* [Document types and tags reference](/documents/document-types-and-tags-reference.md): Default types and hidden model-manual tags.
* [Troubleshooting uploads and downloads](/documents/troubleshooting-uploads-and-downloads.md): What each error message means.