Reassign Material assigns a new material from the GeoDict material database to all voxels (independent of their material ID) of another material. The material IDs are not changed but the material ID itself receives a new set of properties from the material database.

The material to be changed can be selected from the Old Material drop-down menu, which lists all materials that are present in the currently loaded structure.

By clicking on the material name of New Material, the Material Selector opens and the desired new material can be chosen.