Mathcad is a software for analyzing, solving, documenting and sharing engineering calculations. It uses a syntax that resembles standard written mathematics to create equations and expressions. Mathcad's "What You See Is What You Get" interface allows users to perform mathematical operations directly on-screen. The software supports text entry as well as hand-written-like natural math notation using symbolic calculations in algebraic mode or numeric calculations in operator mode. Mathcad creates interactive documents where engineers can capture their design intent accurately with full units support throughout the application so that all numbers are tied to their measurement unit which helps prevent calculation errors