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[math]\displaystyle{ \sum \left ( \mathbf{{\widetilde{\gamma \prod \alpha ^{test} }}'} \right ) }[/math]

[math]\displaystyle{ \frac{1}{\displaystyle 1+ \frac{1}{\displaystyle 2+ \frac{1}{\displaystyle 3+x}}} + \frac{1}{1+\frac{1}{2+\frac{1}{3+x}}} }[/math]

 C     FORTRAN IV WAS ONE OF THE FIRST PROGRAMMING
 C     LANGUAGES TO SUPPORT SOURCE COMMENTS
       WRITE (6,7)
     7 FORMAT(13H HELLO, WORLD)
       STOP
       END

int main(int argc, char** argv)
{
    return 0;
}