hapter" data-level="18" data-path="functions-programming-chapter.html"><a href="functions-programming-chapter.html"><i class="fa fa-check"></i><b>18</b> User-Defined Functions</a>
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<li class="chapter" data-level="18.1" data-path="basic-functions-section.html"><a href="basic-functions-section.html"><i class="fa fa-check"></i><b>18.1</b> Basic Functions</a>
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<li class="chapter" data-level="" data-path="basic-functions-section.html"><a href="basic-functions-section.html#user-defined-functions-block"><i