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folder options will be under tools or view or both
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folder options will be under tools or view or both

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I was using Corel Photo House as my default viewer. &nbsp;But when I downloaded Quick Time it became the default viewer. &nbsp;How do I change it back to &nbsp;Corel Photo House.
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I was using Corel Photo House as my default viewer.  But when I downloaded Quick Time it became the default viewer.  How do I change it back to  Corel Photo House.

default viewers

Operating systems perform basic tasks, such as recognizing input from the keyboard, sending output to the display screen, keeping track of files and directories on the disk, and controlling peripheral devices such as disk drives and printers. For large systems, the operating system makes sure that different programs and users running at the same time do not interfere with each other. The operating system is also responsible for security, ensuring that unauthorized users do not access the system. Operating systems provide a software platform on top of which other programs, called application programs, can run.