> ## Documentation Index
> Fetch the complete documentation index at: https://docs.zynfo.ai/llms.txt
> Use this file to discover all available pages before exploring further.
# Chunks: how your sources are split for answers
> ZynfoAI splits each source into chunks and answers from the ones closest to the question. See how to read a source's chunks to check a wrong answer.
# Chunks
When you add a source, ZynfoAI splits its text into smaller pieces called **chunks**, about 1,000
characters each. When a customer asks a question, the agent looks for the chunks closest in meaning to
the question, usually up to five from a few different sources, and writes its answer from them.
That's why a clear, specific page gives better answers than one long page that covers many topics.
## View a source's chunks
1. Go to **Data Sources**.
2. Click **View content** on the source's row.
The **Knowledge Chunks** page lists each chunk with its first words, its size and when it was created.
Click the eye icon (**View Details**) to read the whole chunk.
Chunks are read-only. To change what the agent knows, edit the page or file, then retrain it or add it
again.
## Check a wrong answer
If the agent gets something wrong:
1. Find the source that should hold the answer and open its chunks.
2. If the information isn't there, the page may not have been read fully. Retrain it, or add a page or
file that states it plainly.
3. If old information is there, update the page and retrain it, or remove the outdated source.
## Related topics
* [Manage your knowledge sources](/knowledge/managing-sources)
* [Train your AI agent](/knowledge/ingestion-methods)
* [Retrain and remove sources](/knowledge/resync-and-delete)
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