Architectural Walls, Windows and Doors:

The Technical tools palette has a full compliment of Wall tools.  You can specify the thickness and fill characteristics.  They are drawn with a single stroke.  There are interactive controls for defining the end form of the elements.  Both orthogonal and a free form that can be drawn at angles are provided.

Auto - Mate:

The wall elements will automatically snap together and "mate-up" to form proper corner shapes of your choosing.  When snapped, they form integrated shapes.  If drawn in a clock-wise sequence, dimensions can be attached and assigned to report interior or exterior dimensions.

Ribbons:

Tools are provided to draw 2-dimensional flat ribbons that follow any Bezier master path.  These elements are quite useful for many drawing activities such as curved roads for maps or general illustration tasks.  The join and cap forms are completely under user control, this makes these elements a generalized "path of a path" with outline and fill.

Gradients - Along or Across:

Multi-color gradient fills may be applied to walls and ribbons.  Notice the blue and yellow ribbon in the screen shot, it has a gradient applied across the ribbon.  Gradients may be applied along a wall or ribbon as well (not shown).

Interactive or Numeric Controls:

Most of the specifying parameters for walls and ribbons are available on-screen as interactive controls.  The Walls parameter palette (lower right in the screen shot) is available for inspection or specification of wall parameters with popup menus and numeric entry fields.