AntiClump makes units not clump. Clumping means the units can be really close to each other. In TFL, clumping was not possible, so AntiClump makes Myth2 act like TFL for clumping only.
The filter is useful for searching plugins. Type letters and only the plugins with what you typed will be shown instead of all plugins.
I was not able to understand Portuguese, I understand now that is anti- glump - is agglomeration.
However, I do the set point in <<anti-glump>> I still can not notice any difference.