[lower, upper]; with sides: "left" the upper end of the range, with "right" the lower end.
The confidence level given (of the one-sided limit, for sides other than "two.sided").
The point estimate.
The method, in full.
The sides, in full.
Warnings (none so far: input without a defined result is an error).
A confidence interval for a proportion, a difference or a ratio of proportions.