> For the complete documentation index, see [llms.txt](https://manual.karamba3d.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://manual.karamba3d.com/appendix/a.4-background-information.md).

# A.2: Background information

The following sections provide an overview of fundamental concepts used in Karamba3D. You may skip these sections if you are already familiar with terms such as "force," "stiffness," "Young's Modulus," or "natural vibrations."