.. dfhack-tool::
    :summary: Toggle infertility for units.
    :tags: fort armok animals

Now you can restore fertility to infertile creatures or inflict infertility on creatures that you do not want to breed.

fix-ster fert|ster [all|animals|only:<race>]

Specify fert or ster to indicate whether you want to make the target fertile or sterile, respectively.

If no additional options are given, the command affects only the currently selected unit.

all

Apply to all units on the map.

animals

Apply to all non-dwarf creatures.

only:<race>

Apply to creatures of the specified race.

fix-ster fert

Make the selected unit fertile.

fix-ster fert all

Ensure all units across the entire fort are fertile.

fix-ster ster only:DWARF

Halt dwarven population growth.