# PREVIEWEFFECT System Variable [GstarCAD 2027](Help%20System/GSTARCAD/2027/Index.md) → [System Variables](Help%20System/GSTARCAD/2027/System%20Variables/(System%20Variables).md) → [P](Help%20System/GSTARCAD/2027/System%20Variables/P/(P).md) ## Function Description: The PREVIEWEFFECT system variable is used to specify the preview visual effect when selecting objects. | | | | --- | --- | | Type | Integer | | Saved in | Not saved | | Initial value | 2 | | Range | 0,1,2 | ## System Variable Value: **0:**dashed(default display style for selected objects) **1:** bold line **2:** dashed and bold line --- [Original help](https://www.gstarcad.net/help/GstarCAD_2027_en-US/detail/systemVariables_Pgsv/PREVIEWEFFECT.html) · © Gstarsoft Co., Ltd.