The Synchronize Graph command of the Algorithms menu creates a new hexagonal adjacency graph based on the current block layout. During normal operation, the block layout is created based on the current hexagonal adjacency graph. The improvement procedures of the block layout algorithms may rearrange the departments in the block layout. However, the location of the department nodes in the adjacency graph has not changed. If you want to perform some sensitivity analysis based on the current layout, you first must rearrange the graph to correspond to the layout since sensitivity analysis uses the graph. This command will synchronize the graph with the location of the departments in the block layout. You can then further manipulate the graph interactively.