FAN (Figurine Algebraic Notation) is the same an SAN except chessmen icons are used instead of piece letters. Fan can be expressed using both white and black chessman Unicode glyphs or just the white ones.
For those interested in using Unicode for FAN output, here are the decimal values of the twelve Unicode glyphs:
One drawback is that sometimes the icons are not as legible as piece letters when using a low resolution output or a small font size. Here is a sample output from Lisp of all twelve Unicode chessmen in your browser with default size and font selections: