DRAW: RECTANGLE BETWEEN SELECTED LINES
RECL command draws a rectangle (or quadrilateral) between two selected lines or polyline segments. It allows you to close custom shaped holes easily.
DRAW: RECTANGLE WITH SPECIFIED AREA
RECA command allows you to draw rectangle with specified area. APLUS will ask for start point and then give you live preview of the rectangle.
POLYLINES: DRAW CEILING HOLE SYMBOL FROM SELECTED POLYLINE
With PLHO command you can draw ceiling hole symbol from selected polyline. APLUS will create new, closed polyline.
PLUMBING: DRAW DUCTS
After setting some parameters you may easily design ducts both inside and outside buildings.