# Commands about Improving Performance When Using Xrefs [GstarCAD 2027](Help%20System/GSTARCAD/2027/Index.md) → [Commands](Help%20System/GSTARCAD/2027/Commands/(Commands).md) **Commands：** - [EXTERNALREFERENCES (GstarCAD 2026)](../../2026/Commands/EXTERNALREFERENCES.md) - [XREF (GstarCAD 2026)](../../2026/Commands/XREF.md) **System Variables：** - [DEMANDLOAD (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/DEMANDLOAD.md) - [INDEXCTL (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/INDEXCTL.md) - [TREEDEPTH (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/TREEDEPTH.md) - [TREEMAX (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/TREEMAX.md) - [XLOADCTL (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/XLOADCTL.md) - [XLOADPATH (GstarCAD 2026)](Help%20System/GSTARCAD/2026/System%20Variables/XLOADPATH.md) --- [Original help](https://www.gstarcad.net/help/GstarCAD_2027_en-US/detail/commandReferences/Commands%20about%20Improving%20Performance%20When%20Using%20Xrefs.html) · © Gstarsoft Co., Ltd.