\n This is a default panel.\n
\n\n This is a red panel.\n
\n\n This is a orange panel.\n
\n\n This is a yellow panel.\n
\n\n This is a lime panel.\n
\n\n This is a cyan panel.\n
\n\n This is a blue panel.\n
\n\n This is a magenta panel.\n
\n{`\n def echo(arg):\n return arg\n \n `}
\n {`\n function echo(arg) {\n return arg;\n }\n `}
\n {`\n public string echo(string arg) {\n return arg;\n }\n `}
\n