Calligraphy is surprisingly easy to pick up, if not to master. One of the hallmarks of calligraphic hand is that the fountain pens used are designed to produce not a round mark but a small straight line if touched onto the paper and lifted again. This means that the character of the letters change depending on the angle you’re holding the pen at. So if the nib is diagonal, SW-NE, a letter O will have a narrow top left and bottom right, gradually widening towards the top right and bottom left. There can be little wonder then that calligraphy sets are so popular and are widely available in book and art supply shops.