I use the HCA properties dialog and the color tab to select different colors for walls, doors, and furniture, but everything draws in the same color. Why?

[HCA Admin]

The problem is that for HCA to draw a wall in the wall color, and a door in the door color, it must be told which lines on your floor plans are for walls and which are for doors. This is done in the DXF file by a concept called layers. Unfortunately, some drawing programs use layers and others do not. If the drawing program does not save the file using layers to denote what are walls, doors, and furniture, HCA has no way to tell walls from doors and walls from windows. For more information see the Drawing Programs technical note.