# ROLLOVEROPACITY System Variable [GstarCAD 2026](Help%20System/GSTARCAD/2026/Index.md) → [System Variables](Help%20System/GSTARCAD/2026/System%20Variables/(System%20Variables).md) → [R](Help%20System/GSTARCAD/2026/System%20Variables/R/(R).md) ## Function Description: The ROLLOVEROPACITY system variable is used to control the palettes opacity when cursor moving to it. This system variable determines the default setting in the Transparency dialog box > Rollover section > How transparent should the palette be on mouse-over option. | | | | --- | --- | | Type | Integer | | Saved in | Registry | | Initial value | 100 | | Range | 0 ~ 100 | ## System Variable Value: **0:** completely transparency **1:** completely opaque --- [Original help](https://www.gstarcad.net/help/GstarCAD_2026_en-US/detail/systemVariables_Rgsv/ROLLOVEROPACITY.html) · © Gstarsoft Co., Ltd.