gnus-group-get-parameter
gnus-group-get-parameter is a compiled Lisp function in `gnus.el
'.
(gnus-group-get-parameter GROUP &optional SYMBOL ALLOW-LIST)
Return the group parameters for GROUP.
If SYMBOL, return the value of that symbol in the group parameters.
If ALLOW-LIST, also allow list as a result.
Most functions should use `gnus-group-find-parameter', which
also examines the topic parameters.