matspecies material begin : end | species [, material begin : end | species...]
An integer representing a material identifier.
An integer number representing the beginning of a range of material species.
An integer number representing the end of a range of material species.
An integer number representing a material species.
Flag indicating that all materials and species should be active.
The matspecies command takes a comma-separated list of material numbers and/or ranges, where a range consists of a begin-end pair.
matspecies 1 5:10 # Activate species 5-10 for mat 1
matspecies 2 6 # Activate just species 6 for mat 2