# FILL Command [GstarCAD 2021](Help%20System/GSTARCAD/2021/Index.md) → [Commands](Help%20System/GSTARCAD/2021/Commands/(Commands).md) → [F](Help%20System/GSTARCAD/2021/Commands/F/(F).md) The FILL command is used to control the filling of objects such as hatches, 2D solids, and wide polylines. ## Command Access: > **Command:** FILL (or 'fill for transparent use) ## Command Prompts: > Enter mode \[ON/OFF\] > \<ON\>: Relative Glossary: **ON:** Turn on the FILL mode. In order to display 3D objects, the extruding direction must be parallel with current observation direction and the hidden lines must be visible. **OFF:** Turn off the FILL mode. Only display and print the profile of objects. The FILL mode only has effect on existing objects rather than Lineweight.   ## Other versions with matching text [GstarCAD 2016](../../../2016/Commands/F/FILL%20Command.md) · [GstarCAD 2017](../../../2017/Commands/F/FILL%20Command.md) · [GstarCAD 2018](Help%20System/GSTARCAD/2018/Commands/F/FILL%20Command.md) · [GstarCAD 2019](Help%20System/GSTARCAD/2019/Commands/F/FILL%20Command.md) · [GstarCAD 2020](Help%20System/GSTARCAD/2020/Commands/F/FILL%20Command.md)