In some cases, computer programs manipulate files that are made visible to the computer user. Originally, computer user interfaces were formed on CRTs. Chinese input methods are methods that allow a computer user to input Chinese characters. Computer user groups meet both virtually and in hackerspaces. Stacked job processing became an exciting possibility for the small but adventurous computer user. A lock screen is a computer user interface element used by various operating systems. But this was not a computer gone haywire, but a computer user gone haywire. Each computer user has their own unique way of using the mouse. Generally, a computer user uses application software to carry out a specific task. However, an ordinary computer user may have dozens of password-protected accounts. The theme that BASIC was for the average computer user is stressed by Kurtz. The computer user may have poor etiquette when using peripherals, for example incorrect posture.