Sets the size of text.
<span size=24,pt {Big}> displays 24-point text.<span size=20 {Text}> displays 20-pixel text.<span size=2,em {Twice as big}> displays text twice the size of the surrounding text.Takes a size, optionally followed by units: px (pixels, the default), pt (points) or em (a multiple of the surrounding text size).
Reading the field generates the size as it was set, as a single piece of text (for example 24pt).