Color the picture by clicking on a color swatch at the bottom of the image then click on the image where you want to apply that color. Color off-line by downloading and printing the pdf version.
This 'comma' shape is the symbol for drizzle. Drizzle consists of drops with diameters less than 0.02" (0.5 mm) which are very close together. Drizzle appears to float while following air currents, although unlike fog droplets, it falls to the ground.
Learn more about weather symbols in JetStream - An Online School for Weather.