This type of software testing is very informal and unstructured and can be performed by any stakeholder with no reference to any test case or test design documents. The person performing Ad-hoc testing has a good understanding of the domain and workflows of the application to try to find defects and break the software.
Wolfram Alpha is a computational search engine (sometimes referred to as an answer engine). The interface looks similar to that of a regular search engine but queries typed into the search box result answers to specific questions rather than listings of websites that may be relevant to the query.
To use AOL Search, type a word or phrase that describes what you're looking for in the AOL Search window, and then press Enter on your keyboard or click Search. The AOL Search window will appear every time you sign in to your AOL Desktop software, unless you disable it.