> For the complete documentation index, see [llms.txt](https://manual-1-3.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-1-3.karamba3d.com/appendix/a.4-background-information.md).

# A.2: Background information

The sections that follow try to shed light on some basic concepts which Karamba3D makes use of. Skip these sections in case you feel comfortable with terms like "force", "stiffness", "Young's Modulus" or "Natural Vibrations".