> ## Documentation Index
> Fetch the complete documentation index at: https://docs.tensorpro.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Sources and answers

> Add documents to a workspace, ask questions, and check where each answer came from.

## Add documents

In the chat box, choose **+**, then **Upload documents**, and add your files:
PDF, DOCX, Markdown or plain text, up to 10 MB each. EDN turns each document
into memory records that answers can draw on and cite.

Your documents appear under **Files** in the left panel. To remove one, choose
its trash icon. Its memory records are removed too.

## Ask questions

Type your question in the chat box and press **Enter**. EDN finds the relevant
memory, your model answers, and the exchange is saved to memory.

* **Citations:** answers cite your sources with small numbers. Hover over a
  number to see its source, or choose **Sources** under the answer to list them
  all.
* **Unverified claims:** an amber **!** marks a claim EDN could not verify.
* **No matching sources:** if your documents don't cover the question, your
  model is instructed to say so instead of guessing.

## See what's behind each answer

* **SIP - Retrieved Memory** in the right panel shows exactly what memory EDN
  gave your model. See [The SIP](https://docs.tensorpro.ai/concepts/sip.md).
* The **Records** tab shows your recent memory. Choose **Confirm** on an
  AI-inferred fact to make it usable in answers.
* **View API calls** under an answer shows the Memory API calls behind it, the
  same calls your own app can make.


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