Drop labels onto the plan. Arrow keys nudge 1 ft (Shift+arrow = 1 in); Snap 1ft while dragging. Ctrl/Cmd+click duplicates. Only Build regenerates stairs from the prompt — model/rail options update the rail & notes without moving treads. Tread size applies on next Build. Blue rail shows only when marked After.
Floor / rail labels
Door swing stamps
Pie / winder treads
Drop a rectangular winder (~tread run × width). Drag each blue corner independently to shape a freeform quad / trapezoid. Rotate with the top handle.
Stair geometry
Blue rail (After only)
Straight / dual straight only — Left/Right per flight. Hidden for curved Bespoke/Otolift.
Stairlift type
Callouts
Title block
Prompt examples
13 steps straight
7 L 2 · 7 to landing then 2
7 steps to switchback landing 7 steps