# General commands

:;<h2>reliability Command</h2>

This command creates the reliability domain in which the sensitivity, reliability and optimization components are kept. This
reliability domain is parallel to the finite element (FE) domain in OpenSees. Currently, the commands for stand-alone sensitivity : analysis (e.g., sensitivityIntegrator, sensitivityAlgorithm) are set in the reliability domain only and, thus, the ‘reliability’
```tcl reliability ```

:;<h2>parameter Command</h2>

In DDM-based FE response sensitivity analysis, the sensitivity parameters can be material,
geometry or discrete loading parameters. Each parameter should be defined as:
```tcl parameter $tag <specific object arguments> ```