# Visual Extension [GstarCAD 2027](Help%20System/GSTARCAD/2027/Index.md) → [User Guide](Help%20System/GSTARCAD/2027/User%20Guide/(User%20Guide).md) → [Express Tools](Help%20System/GSTARCAD/2027/User%20Guide/Express%20Tools/(Express%20Tools).md) → [GstarCAD Tools](Help%20System/GSTARCAD/2027/User%20Guide/Express%20Tools/GstarCAD%20Tools/(GstarCAD%20Tools).md) Normally after extension, the extension effect will be displayed, but ETT command can display the effect in real time until you confirm the position. ## Operation steps: 1. Start the command. 2. Select the line that needs to be extended, the system will choose the nearest side you clicked as extension side automatically . 3. Move the cursor and the segment will extend in real time. --- [Original help](https://www.gstarcad.net/help/GstarCAD_2027_en-US/detail/GUG_ET_GstarCADTools/Visual%20Extension.html) · © Gstarsoft Co., Ltd.