R help - Jun 2018 - CARET PACKAGE - PENALISED MULTINOMIAL REGRESSION MODEL

Hi,
     In the Caret package, in one of the training model method for
classification , penalised multinomial regression has been used? I could
not find anywhere how the penalised parameters have been chosen here . I
need the statistical methods that have been used. Can someone please help
me?

Thanks in advance.

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