A script is a type of program or set of instructions written in a programming or scripting language that automates tasks or controls the behavior of a system. in wincc scada have two type of script ANSI C and Visual basic script. both script are use full to design a proper graphical user interface. by using these script it easy to handle data, event, action etc. Scripting languages are generally easier to write. They are often used for tasks that require quick development and are usually more flexible, allowing for rapid changes. Both C Script and VBScript (Visual Basic Script) are scripting languages used to automate tasks, but they differ in their syntax, capabilities, and typical usage.