# PLINETYPE System Variable [GstarCAD 2026](Help%20System/GSTARCAD/2026/Index.md) → [System Variables](Help%20System/GSTARCAD/2026/System%20Variables/(System%20Variables).md) **Function Description:** The PLINETYPE system variable is used to control whether to use optimized 2D polylines. | | | | --- | --- | | Type | Integer | | Saved in | Registry | | Initial value | 2 | | Range | 0,1,2 | **System Variable Value:** **0:** do not convert polylines when opening an old drawing; PLINE creates polylines in old format. **1:** do not convert polylines when opening an old drawing; PLINE creates optimized polylines. **2:** do not convert polylines when opening an old drawing; PLINE creates optimized polylines. The PLINETYPE system variable also controls the polyline types created by the following commands: BOUNDARY, DONUT, PEDIT, POLYGON, and SKETCH. --- [Original help](https://www.gstarcad.net/help/GstarCAD_2026_en-US/detail/systemVariables/PLINETYPE.html) · © Gstarsoft Co., Ltd.