/Bind

Can not be used from console.

/Bind OriginalBlockType ReplacementBlockType

Assigns one block type to another. Allows you to build block types that are not normally buildable directly, such as: admincrete, water, grass, lava, double step.

/Bind <BlockType>

Will reset the binding you have set for that block type.

/Bind

Will reset ALL of your bindings.

/B

Can be used to replace /Bind.