Tracing paper is paper made to have low opacity, allowing light to pass through.
Various uses: Translucent tracing paper used for individual wrapping of razor blades; Tracing paper suitable for drawing office use; sufficiently translucent for an image on it to be reproduced by processes using transmitted light and for a design to be traced on it from an original placed beneath it. Such processes include blueprint and diazo; album cover; flyer; coversheet; business card; greeting card; poster; origami; envelope.