Mathcad 12 calculation software provides an open data model, scalability, flexibility to document engineering-critical values, expanded units and dimensions handling, and 2-D plotting capabilities. This plotting option includes a secondary y axis that allows data on two different scales to be plotted on the same set of axes. It also provides the ability to change color on markers, and an improved interface to change color on grids.The software adopts XML as its native file format, based on schemes to represent manageable engineering information. Users can automatically save files as XML documents, making them searchable and sharable with other users and systems, including document management applications, computer-aided design (CAD) programs and product data management (PDM) solutions. Other features include a Data Import Wizard, Web controls and worksheet creation for the Mathcad Application Server.