The mark consists of The monogram is a stylization of the letters "T," "F" and "O," rendered as interlocking lines rather than sequential letters. The "O" is the oval. A horizontal stroke and a vertical stroke intersect within the oval and extend beyond it to form the "T." A stylized script "F" appears as a curved diagonal stroke with hooked terminals at the upper right and lower left, crossing the horizontal stroke. The same lines simultaneously depict a tree, and by extension a family tree.