Members of the structure may be drawn directly by using the mouse to define the beginning and end points of a member.  The scale at which this drawing is carried out may be specified by choosing the Size… command from the View Menu.  The maximum and minimum coordinates to be used in the x, y and z directions may be entered and Multiframe will scale these coordinates to the current size of the Frame window.  All movements in the window are accompanied by a display of the current pointer coordinates in the lower left hand corner of the window.  All coordinates are shown in the current length units as set using the Units command from the View menu.