StepGraph Command
 StepGraph( <List of Points> )

Draws a step graph of the given list of points. Each point is connected to the next point in the list by a horizontal line segment.
StepGraph({(1, 1), (3, 2), (4, 5), (5, 7)})
 StepGraph( <List of Points>, <Boolean Join> )

Draws a step graph of the given list of points. If Join = false, then a horizontal line segment is drawn towards the xcoordinate of the next point, but a vertical line segment is not drawn. If Join = true, then each point is connected to the next point in the list by a horizontal and a vertical line segment.
StepGraph({(1, 1), (3, 2), (4, 5), (5, 7)}, true)
 StepGraph( <List of xcoordinates>, <List of ycoordinates> )

Draws a step graph of a list of points created from the given lists of coordinates. Each point is connected to the next point in the list by a horizontal line segment.
StepGraph({1, 3, 4, 5}, {1, 2, 5, 7})
 StepGraph( <List of xcoordinates>, <List of ycoordinates>, <Boolean Join> )

Draws a step graph of a list of points created from the given lists of coordinates. If Join = false, then a horizontal line segment is drawn towards the xcoordinate of the next point, but a vertical line segment is not drawn. If Join = true, then each point is connected to the next point in the list by a horizontal and a vertical line segment.
StepGraph({1, 3, 4, 5}, {1, 2, 5, 7}, true)
 StepGraph( <List of xcoordinates>, <List of ycoordinates>, <Boolean Join>, <Point Style> )

Draws a step graph as described above. Point style values of 2, 1, 0, 1, 1 determine how points are drawn as follows: 0 = no points are drawn 1 = solid points on the right 2 = solid points on the right, open points on the left 1 = solid points on the left 2 = solid points on the left, open points on the right
StepGraph({1, 3, 4, 5}, {1, 2, 5, 7}, false, 1)
 StepGraph( <List of Points>, <Boolean Join>, <Point Style> )

Draws a step graph as described above.
StepGraph({(1, 1), (3, 2), (4, 5), (5, 7)}, false, 1)