> ## Documentation Index
> Fetch the complete documentation index at: https://calcs.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# ESICS: Bracket-on-a-Bracket

> The bracket-on-a-bracket feature of the bracket checker allows the user to design an arrangement with a symmetric bracket being held by an inner ...

The bracket-on-a-bracket feature of the bracket checker allows the user to design an arrangement with a symmetric bracket being held by an inner bracket as seen in Figure 11.

![](https://s3.amazonaws.com/helpscout.net/docs/assets/5c09df402c7d3a31944ed720/images/643816ca37fd073d73d6c74a/file-h0KBMIdUqi.png)

**Figure 11. Example Bracket-on-a-Bracket System**

To activate this feature the user has to select a symmetrical bracket in the bracket selector. Once a symmetrical bracket is selected this toggle shown in Figure 12 is prompted to the user asking them whether they would like to design a bracket-on-a-bracket system. As the bracket-on-a-bracket arrangement is selected, another set of bracket properties inputs is visible to the user that will define the properties of the inner bracket.

![](https://s3.amazonaws.com/helpscout.net/docs/assets/5c09df402c7d3a31944ed720/images/64381c00ad20e8714a50d6cd/file-QvXxtQXSq5.png)**Figure 12. Bracket-on-a-Bracket Toggle**