# REVCLOUDAPPROXARCLEN 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 REVCLOUDAPPROXARCLEN system variable is used to control the current approximate arc length for revision clouds. | | | | --- | --- | | Type | Real | | Saved in | Registry | | Initial value | 0.0000 | | Range | / | --- [Original help](https://www.gstarcad.net/help/GstarCAD_2026_en-US/detail/systemVariables_Rgsv/REVCLOUDAPPROXARCLEN.html) · © Gstarsoft Co., Ltd.