Shell
![[Example of what this operation can look like]](/worldtool-docs/assets/images/shell-8272e584f73d6d837539408f6a8b6f34.png)
The Shell menu can be found with the [Shell...] button in the main General Tool menu. This operation creates blocks around the area's sides.
![[The Shell menu]](/worldtool-docs/assets/images/shell_menu-7d2cc66e62fc3407ecf4a4c6b37f86cc.png)
The block selection menu at the start of the menu starts the Shell operation once you select a block with it.
Inner Block
The [Inner Block] option lets you select a block to fill the inside of the area with. Once this option is on, you can use the button again to turn it off.
Side Settings
The [Side Settings...] button opens a menu that lets you change how many blocks thick each side is, as well as what sides to place.
![[The Side Settings menu]](/worldtool-docs/assets/images/shell_side_settings_menu-5d3f9014c0cb7e311b4384e46ac268af.png)