> For the complete documentation index, see [llms.txt](https://manual-2.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-2.karamba3d.com/3-in-depth-component-reference/3.3-cross-section/3.3.10-cross-section-selector.md).

# 3.3.8: Cross Section Selector

The component **“CroSecSelect”** deals with selecting cross sections by name or index from a list of cross sections. Provide the name(s) or index(es) of desired cross sections in the **“Name|Ind”**-plug. Cross section names are not case sensitive. All characters coming after “#” count as remark. It is possible to use regular expressions for selection (these start with “&”). List indexes start from zero.

**“CroSecSelect**” lets you specify beams via the **“Elems|Ids”**-plug which shall be assigned a specific cross section. The **“Assemble”**-component sets the cross-sections of these elements accordingly. Alternatively, cross sections can be directly plugged into the element-creation-components.

In case one does not supply a list of cross sections at the **“CroSec”**-input-plug, the cross section table that comes with Karamba3D is used by default.

![Fig. 3.3.8.1: Cantilever with four different cross sections taken from the standard cross section table](/files/-MCkEZArx42Z-xJ-GSOe)

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