# Underlay Layers Dialog Box [GstarCAD 2027](Help%20System/GSTARCAD/2027/Index.md) → [Commands](Help%20System/GSTARCAD/2027/Commands/(Commands).md) → [Dialog Boxes](Help%20System/GSTARCAD/2027/Commands/03%20Dialog%20Boxes/(Dialog%20Boxes).md) ## Function Description: Controls the display of the layers in a DWF or DWFx underlay. ![](Help%20System/GSTARCAD/2027/assets/d842148f126e21bcb28a73d72c946eb5690d80a4dabdb6cafdda578cd9c91bd7.jpg) --- [Original help](https://www.gstarcad.net/help/GstarCAD_2027_en-US/detail/commandReferences_D/DWFLAYERS_DIA.html) · © Gstarsoft Co., Ltd.