Technical drawing, architectural blueprint, program diagram, 2D illustration, construction manual, design guide, A4 paper size, grid paper texture, black ink lines, bold fonts, detailed annotations, ruler-straight edges, geometric shapes, building façade, column and beam structure, staircases, elevations, floor plans, section cuts, exploded views, isometric projections, minimalist color scheme, white background, orthogonal composition, sharp lines, precise details, technical atmosphere.