The call that produced the object x is printed, followed by a
five-column matrix with columns N_main, N_int, Df, %Dev and Lambda.
The N_main column is the number of main-effect terms in the solution, and N_int the number of interaction terms. Since an interaction term implies both main effects, the former is always at least as large as the latter.
The Df column is the number of nonzero coefficients (Df is a
reasonable name only for lasso fits). %Dev is the percent deviance
explained (relative to the null deviance).
References
Yang, James and Hastie, Trevor. (2024) A Fast and Scalable Pathwise-Solver for Group Lasso
and Elastic Net Penalized Regression via Block-Coordinate Descent. arXiv tools:::Rd_expr_doi("10.48550/arXiv.2405.08631").