The operating system is the set of instructions that direct the computer to accomplish specific tasks such as document production

that line of code is written in the python programming language. put simply, a programming (or coding) language is a set of syntax rules that define how code should be written and formatted. thousands of different programming languages make it possible for us to create computer software, apps and websites.

explanation:

answerthetitle bar displays the title of the document which you are currently working;