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

# Technical

- [Overview & Basic Approach](https://docs.caterpillarproject.org/technical/basic-approach.md)
- [Initial Conditions](https://docs.caterpillarproject.org/technical/initial-conditions.md)
- [Parent Simulation](https://docs.caterpillarproject.org/technical/parent-simulation.md)
- [Zooming In](https://docs.caterpillarproject.org/technical/zooming-in.md)
- [Halo Identification](https://docs.caterpillarproject.org/technical/halo-identification.md)
- [Merger Trees](https://docs.caterpillarproject.org/technical/merger-trees.md)
- [Semi-Analytic Models](https://docs.caterpillarproject.org/technical/semi-analytic-models.md)