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# pfui
Give Pi a consistent built-in working style when you have not chosen a custom system prompt.
PFUI supplies a practical fallback prompt and makes Pi's installed documentation available to its bundled knowledge skill.
## Use it in Pi
Nothing to invoke.
PFUI activates automatically when Pi starts without a custom system prompt.
Your own custom or forced system prompt takes precedence and is left unchanged.
Ask Pi questions about its installed features when useful, for example: `How do I configure Pi in this installation?`
The bundled `pi-knowledge` skill can locate relevant installed documentation for the agent.
Install through [Installation](../../README.md#install).
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