This paper proposes an LFG analysis of SIE - a Polish word which is usually referred to as the reflexive pronoun even though it is not always the case that it is used in this function. Moreover, SIE can be used in more than one function at the same time; there is also the issue of haplology of SIE in verb chains and of sharing it under coordination - the proposed analysis captures these phenomena. The paper discusses the status of SIE, whether it is an argument or a marker (a co-head with no PRED), and treats it as a marker, though some counterevidence against a unified analysis is presented.