[list][*]Points A and B can be moved. Magnitude and Direction can be set in text boxes.[*][b]Units [/b]slider sets unit system. [b]View[/b] slider shows alternate solutions methods.[*]Checkbox shows or hides answer.[*]Slide force along its line of action with the [b]blue diamond[/b].[*]Drag background to pan. Use scrollwheel to zoom.[/list]