# Parameters Manager [GstarCAD 2021](Help%20System/GSTARCAD/2021/Index.md) → [User Guide](Help%20System/GSTARCAD/2021/User%20Guide/(User%20Guide).md) → [Additional Pages](Help%20System/GSTARCAD/2021/User%20Guide/Additional%20Pages/(Additional%20Pages).md) ### **Parameters Manager** The following operations are supported by Parameters Manager: - To highlight the constraint in the drawing, click the name of a dimensional constraint parameter. - To edit a name or expression, Double-click it. - To remove a dimensional constraint parameter or user variable, right-click it and click Delete . - To sort the list of parameters by name, expression or value, click the respective column heading.  Creates a new user parameter. Delete the selected parameters Creates a new parameter group, you can create many parameter groups to manage parameter. You can find the operators and functions within expressions supported by Parameters Manager: [Parameters Manager Expressions](Parameters%20Manager%20Expressions--def75b4bf915.md) --- Gstarsoft Co.,Ltd ## Other versions with matching text [GstarCAD 2017](../../../2017/User%20Guide/Additional%20Pages/Parameters%20Manager--d4985531bf67.md) · [GstarCAD 2018](../../../2018/User%20Guide/Additional%20Pages/Parameters%20Manager--d4985531bf67.md) · [GstarCAD 2019](../../../2019/User%20Guide/Additional%20Pages/Parameters%20Manager--d4985531bf67.md) · [GstarCAD 2020](../../../2020/User%20Guide/Additional%20Pages/Parameters%20Manager--d4985531bf67.md)