KLayout 0.30.4 (2025-10-27 8b010d61d) [master] 
KLayout Documentation (Qt 5): Main Index » KLayout User Manual » Editing Functions » Basic Editing Operations » Rename A Cell
Rename A Cell
  To rename a cell, select the cell in the hierarchy browser and choose "Rename Cell" from the 
  context menu (right mouse button). You are prompted for a new name which must not exist yet.