# ETT [GstarCAD 2022](Help%20System/GSTARCAD/2022/Index.md) → [What's new](Help%20System/GSTARCAD/2022/What's%20new/(What's%20new).md) → [Additional Pages](Help%20System/GSTARCAD/2022/What's%20new/Additional%20Pages/(Additional%20Pages).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.