There is, among philosophers involved in the debate concerning the nature and epistemology of understanding, a general recognition that this state has a grasping component that accounts for some of its distinctive features. This article defends the view that this component of understanding consists of a knowledge of how to use a particular explanation to account for a given phenomenon. How a subject acquires this knowledge is examined and the result of this examination is shown to highlight the particular contribution of the grasping component of understanding to the distinctive features of this state.