# Convert BLOCK to XREF [GstarCAD 2021](Help%20System/GSTARCAD/2021/Index.md) → [User Guide](Help%20System/GSTARCAD/2021/User%20Guide/(User%20Guide).md) → [Express tool](Help%20System/GSTARCAD/2021/User%20Guide/Express%20tool/(Express%20tool).md) → [Blocks](Help%20System/GSTARCAD/2021/User%20Guide/Express%20tool/Blocks/(Blocks).md) ## Convert BLOCK to XREF Replace all instances of a standard block with an xref. Unbind xrefs that are bound. **Menu:** Express\>Blocks\>Convert Block to Xref **Command Entry:** BLOCKTOXREF  BLOCKTOXREF searches the entire drawing for references to a specified block name and replaces them with an xref that you specify. You can have the unreferenced block purged when done. In BLOCKTOXREF dialog box. Select a block to replace: Table and 4 chairs. Then select: OK  In Select a Xref file. Select the Xref you want. Then select: open   Purge unreferenced items when finished? Yes/No --- Gstarsoft Co.,Ltd ## Other versions with matching text [GstarCAD 2016](../../../../2016/User%20Guide/Express%20tool/Blocks/Convert%20BLOCK%20to%20XREF.md) · [GstarCAD 2017](../../../../2017/User%20Guide/Express%20tool/Blocks/Convert%20BLOCK%20to%20XREF.md) · [GstarCAD 2018](Help%20System/GSTARCAD/2018/User%20Guide/Express%20tool/Blocks/Convert%20BLOCK%20to%20XREF.md) · [GstarCAD 2019](Help%20System/GSTARCAD/2019/User%20Guide/Express%20tool/Blocks/Convert%20BLOCK%20to%20XREF.md) · [GstarCAD 2020](Help%20System/GSTARCAD/2020/User%20Guide/Express%20tool/Blocks/Convert%20BLOCK%20to%20XREF.md)