What term describes a feather that helps install an application to a computer?

The term that describes a feature that assists in installing an application on a computer is "wizard." A wizard is a user interface element that guides users through a series of steps to complete a specific task, such as installing software. It simplifies the process by breaking it down into manageable parts, providing instructions, and often automating certain actions to ensure a smooth installation experience.

In this context, when users initiate an installation, the wizard typically presents them with prompts and options, helping them to navigate through settings, licensing agreements, and configuration preferences. This user-friendly approach is particularly beneficial for individuals who may not be technically savvy, as it removes much of the complexity associated with software installations.

While the other terms mentioned have their own specific uses within computing, they do not directly relate to the process of guiding users through an installation. A "program" refers to a set of instructions that the computer executes, while "cast" is not a common term in this context; it’s often related to multimedia or acting. "Assistant" could refer to various types of helpful features or tools, but it lacks the specific functionality and user-guidance aspect that a wizard provides in the context of software installations.