The digital world enables the creation of personalized documents. In this paper we are interested in describing a computer mediated activity by a person throughout a semi-automatic redocumentation process. This process uses traces generated automatically, during a user-system interaction, to assist a person in producing a personalized document describing the traced activity. To support that, a general framework for an authoring tool is proposed through two main phases. During the first phase, an automatic and parameterized transformation is applied on the input activity trace to generate a fragmented document. Each fragment describes one or many observed elements of the modeled trace and relations between fragments are deduced from relations between these elements. The second phase consists in interactive transformations on the intermediate produced document until getting the final hypermedia document. Our authoring tool uses composition of personalized document issues and RST principals to interpret user's choices and to maintain the coherence of the produced document.