The term 'try out' can refer to a variety of activities, such as auditioning, testing, using, demonstrating, applying, writing an ESSAY, proving, backing up, and pretesting. Auditioning is the process of performing in front of a panel of judges in order to be considered for a role or position. Testing involves taking a TEST to demonstrate one's knowledge or skills. Using refers to utilizing something, such as a tool or piece of equipment. Demonstrating is the act of showing how something works or is used. Applying is the process of submitting an application for a job or other opportunity. Writing an ESSAY is the act of composing a written piece on a particular topic. Proving involves providing evidence to support a claim. Backing up is the process of creating a duplicate copy of data in order to protect against loss. A SAMPLE is a small portion of something that is used to represent the whole. Pretesting is the practice of testing something before it is released to the public.