# SNAPISOPAIR System Variable [GstarCAD 2027](Help%20System/GSTARCAD/2027/Index.md) → [System Variables](Help%20System/GSTARCAD/2027/System%20Variables/(System%20Variables).md) **Function Description:** The SNAPISOPAIR system variable is used to control the isometric plane for the current viewport. | | | | --- | --- | | Type | Integer | | Saved in | Drawing | | Initial value | 0 | | Range | 0,1,2 | **System Variable Value:** **0:** left **1:** top **2:** right --- [Original help](https://www.gstarcad.net/help/GstarCAD_2027_en-US/detail/systemVariables/SNAPISOPAIR.html) · © Gstarsoft Co., Ltd.