The method, system and computer program product for discovering a direction of flow through at least a portion of the components represented in the sheets of a drawing set includes providing an electronic representation of the sheets of the drawing set, automatically reviewing at least one sheet of the drawing set, including automatically recognizing at least one flow-related reference depicted in the sheets of the drawing set, determining a direction of flow through at least a portion of the components based upon at least one flow-related reference, and creating flow information associated with the electronic representation of the sheets of the drawing set that includes the direction of flow through at least a portion of the components. The electronic representation of the direction of flow through the portion of the components also may be viewed.