| http://www.w3.org/ns/prov#value | - introduction to the while loop. the structure is similar to an if statement, but there is an important difference. with an *if* statement, the code inside the curly braces will run 0 or 1 times (0 times if the condition is false, 1 time if the condition is true). but with the while loop code can run many times, not only 0 or 1. it will keep running while the test condition is true. it is ideal to
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