What prints. Text is set at a true cap height that fits its box in the typeface you chose (never below 3 mm, so the strokes print). A QR code is square at its box's smaller side, never under 22 mm, so a phone reads it; a barcode is a real Code 128. Icons are from a set drawn for printing. Everything you place is one color of "ink" on the plate: raised about a millimetre, set in flush, or engraved. The canvas is a sketch; the 3D preview and the close-up are the exact geometry. Anything too fine to print is left out and you're told.