val log2 : 'a -> 'b -> unitval log3 : 'a -> 'b -> 'c -> unitval log4 : 'a -> 'b -> 'c -> 'd -> unitval logMany : 'a array -> unitval info2 : 'a -> 'b -> unitval info3 : 'a -> 'b -> 'c -> unitval info4 : 'a -> 'b -> 'c -> 'd -> unitval infoMany : 'a array -> unitval warn2 : 'a -> 'b -> unitval warn3 : 'a -> 'b -> 'c -> unitval warn4 : 'a -> 'b -> 'c -> 'd -> unitval warnMany : 'a array -> unitval error2 : 'a -> 'b -> unitval error3 : 'a -> 'b -> 'c -> unitval error4 : 'a -> 'b -> 'c -> 'd -> unitval errorMany : 'a array -> unitval timeStart : string -> unitval timeEnd : string -> unit