<p>Note that some lines in the widget are out-commented which ask you to assign a numeric value to a variable and then to print the variable’s content to the console. You may enter your solution approach to <tt>script.R</tt> and hit the button <em>Run</em> in order to get the feedback described further above. In case you do not know how to solve this sample exercise (don’t panic, that is probably why you are reading this), a click on <em>Hint</em> will provide you with some advice. If you still can’t find a solution, a click on <em>Solution</em> will provide you with another tab, <tt>Solution.R</tt> which contains sample solution code. It will often be the case that exercises can be solved in many different ways and <tt>Solution.R</tt> presents what we consider as comprehensible and idiomatic.</p>
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