Software Products Lines (SPL) is a software engineering approach to developing software system families that share common features and differ in other features according to the requested software systems. The adoption of the SPL approach can promote several benefits such as cost reduction, product quality, productivity and time to market. As with any approach to software development, the activities of software evolution should be seen as something inevitable, constant and routine. Within the scenario of development of SPLs, evolution activities are driven by changes in its features over the releases. As such, the development of SPLs imposes new challenges to the activities of analyzing and comprehension the evolution of their features, considering the various releases of an SPL. Recent research works propose visual strategies with automated support by visualization tools. Such approaches have limitations since some do not provides support for a comparison of features in different releases of an SPL and others do not support the concept of features present in the SPL. This paper proposes the FEAF, an infrastructure to support the construction of tools for analyzing and comprehending the evolution of features in different releases of an SPL. Based on the proposed infrastructure, we developed a visual tool, which assists with the analysis and understanding of the evolution of the features of an SPL, called FEACP. It provides a visualization strategy that uses two light views based on graph representation. The tool was evaluated through a controlled experiment that compares our visualization strategy with the visualization strategy of Source Miner Evolution.