# HidePrefix

All field names beginning with this text string will be hidden in the same manner as the system fields. This is a user-defined variable.

Syntax:

HidePrefix

Example:

`set HidePrefix='_' ;`

If this statement is used, the field names beginning with an underscore will not be shown in the field name lists when the system fields are hidden.

## Learn more

* [System variables](https://help.qlik.com/en-US/qlikview/September2025/Subsystems/Client/Content/QV_QlikView/Scripting/SystemVariables/system-variables.htm)