# CTAB System Variable [GstarCAD 2023](Help%20System/GSTARCAD/2023/Index.md) → [System Variables](Help%20System/GSTARCAD/2023/System%20Variables/(System%20Variables).md) **Function Description:** The CTAB system variable is used to control to display model tab or specified layout tab in drawing area. | | | | --- | --- | | Type | Strings | | Saved in | Drawing | | Initial value | Model | | The CTAB system variable is usually used in customized programs. --- [Original help](https://www.gstarcad.net/help/GstarCAD_2023_en-US/detail/systemVariables/CTAB.html) · © Gstarsoft Co., Ltd.