Unlike plug-ins, scripts are executable files written in a certain format using a specific descriptive language, also known as macro or batch files. Scripts can usually be called and executed temporarily by an application. In short, a script is a piece of text command. These text commands can be seen (such as opening with Notepad for viewing and editing). When a script program is executed, it is translated into machine recognizable instructions one by one by an interpreter of the system and executed in sequence.