A Quick Look at Renormalons *

Renormalons as a pure theoretical construct are known since 1977 [1]. The first attempts to develop a renormalon-based phenomenology are more recent [2,3]. Nowadays it is a fast developing field and a concise review is obviously beyond the scope of the present contribution. Instead, this paper is a compromise between an original paper and a mini-review. Namely we try to put the topics discussed in original papers with the participation of the authors into a more general framework.