[...]if the latter, you need to make multiple versions of this package with different min radii (wtf is the plural for radius)[...]
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Got it in one; it's
radii http://scholar.google.com.au/scholar?hl=en&q=radii&btnG=Search&as_sdt=1%2C5&as_ylo=&as_vis=0. Some of the plurals on words with Latin roots can be very unexpected. Virus and Virii, for example. Although, in the case of "viruses" (and a lot of English speakers are unaware of this), the Latin plural is still accepted alongside the Americanization in academic publishing with http://scholar.google.com.au/scholar?q=virii&hl=en&btnG=Search&as_sdt=1%2C5 and http://scholar.google.com.au/scholar?hl=en&q=viruses&btnG=Search&as_sdt=1%2C5&as_ylo=&as_vis=0. No wonder it's so confusing. Interestingly, academic publishing has http://scholar.google.com.au/scholar?hl=en&q=radiuses&btnG=Search&as_sdt=1%2C5&as_ylo=&as_vis=0, so evidently the English "language" or, rather,
dialect, is continuing to evolve in the inconsistent and illogical way that is world famous for its potential to drive any rational person insane.