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# Comet User Guide
The Comet user guide covers installation, configuration, supported data sources, supported operators
and expressions, and tuning advice for running Apache Spark with Comet acceleration.
The **current stable release** is 0.17.x. Most users should start there. The **development snapshot**
tracks the upcoming release and may include features and fixes that are not yet generally available.
User guides for **older releases** are kept for reference under [Older Versions](older-versions).
```{toctree}
:maxdepth: 2
:caption: User Guide
:hidden:
0.17.x (current) <0.17/index>
Development Snapshot <latest/index>
Older Versions <older-versions>
```